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Rare and Miscellenous Fish

Rare and Miscellenous Fish - Nano Tanks Australia Aquarium Shop

Fish in this group can't be accurately classified to some of the other groups. We always have a nice array of rare mischellenous fish and we encourage you to look at it often.

If you are looking for something else and something special please let us know and we can try finding it for you.

  • Otocinclus Arnoldi Great for Shrimp Tanks and Algae Control - Nano Tanks Australia Aquarium Shop

    [ARRIVING 16-FEB-2026] Otocinclus Arnoldi Great for Shrimp Tanks and Algae Control 2-4cm

    50 in stock

    OVERVIEW Otocinclus Arnoldi, or as they are also called Otos, Otto Cats and Ottos. They may be the best scavengers for freshwater aquariums! These little guys eat algae but should not be confused with other similar looking fish that we sell such as Chinese Algae Eaters, Siamese Flying Foxes and Siamese Algae Eaters so make sure to check that before making a purchase. Otocinclus Arnoldi is the friendliest and most adorable little fish you could keep in your aquarium. They’re so easy to care for, provide hours of entertainment with their inquisitive nature, and they eat up all that pesky algae before it can grow out of control! HABITAT Otos are native to South America and can be found east of the Andes throughout the lowlands from northern Venezuela to northern Argentina. They spend most of their time in schools, swimming through moderate-to-slow rivers with well-oxygenated water. BUYING HEALTHY OTOS Otos are a great addition to any tank, but they’re very fragile. To make sure you don't lose them before the end of their first year, it's important that you pick out healthy Otos from your local fish store- if possible try and take some advice on what breeds will work best for your aquarium. BEHAVIOR If you keep your Otos properly, they'll show a ton of activity and personality during the day. They're industrious workers that will spend most of their time sucking on rocks, leaves with algae growing or anything else in sight! It doesn’t matter which species of Otocinclus you own, they all require the same water conditions – low stock density and pristine water – depending on your water source, you may want to use an RO system. AQUARIUM There are many reasons why you should consider getting an aquarium. For one, they can be a great avenue for relaxation and stress relief while making your home feel more inviting. Having fish also helps to improve the quality of air in our homes by producing negative ions that combat positive ones (i.e., it freshens up the room). To make sure your tank is healthy and happy, follow these guidelines: - You'll need an aquarium filter capable of cycling at least four times per hour (GPH) and with mature nitrate levels between 0-20ppm - No measurable ammonia or nitrite should be present either.  - Otos prefer water with a stable pH that is slightly acidic (6-7.5).  - The temperature inside their tanks should average about 72°F - 82°F degrees Fahrenheit (~22 °C ~ 28 °C) which allows them to thrive year-round without sustaining damage from changes in heat level outside.  OTOCINCLUS Arnoldi SIZE The Otocinclus Arnoldi is a small fish that can grow to be about 1 ½ - 2 inches when fully mature. These quick and agile swimmers are able to dart from one end of the tank to another in an instant, making them ideal for smaller aquariums or tanks with slower-moving inhabitants. TANK MATES Otocinclus Arnoldi is known for being non-aggressive by nature. But because these tiny fish live in the wild, they have no means to protect themselves. If you choose tank mates wisely, then your Otos will be just fine! Otocinclus Arnoldi may not seem like much to look at with their small size and see-through skin but there is a reason why people keep them as pets; otos are peaceful little creatures that don't bother anybody or anything else in their home aquarium thanks to their lack of aggression which stems from living out on land without any natural predators where it has easy access food sources such as algae off rocks and plants around waterways. FEEDING Algae is the main food for Otos, but many aquariums can't produce enough to sustain them. If this happens in your tank, use algae wafers or Catfish pellets as a supplement. BREEDING Otos are hard to breed because you can't see a difference. But, female Otos tend to be larger and wider than males if you look closely enough for the little details. octocinclus

    50 in stock

    $21.00

  • True Siamese Algae Eaters SAE - Nano Tanks Australia Aquarium Shop

    [ARRIVED 20-JAN-2026] True Siamese Algae Eaters SAE 4-6cm

    9 in stock

    Siamese algae eaters (Crossocheilus siamensis) OVERVIEW: Siamese algae eaters (Crossocheilus siamensis) are a member of the carp family within cyprinids. This means they reside mainly in freshwater habitats with an omnivorous feeding preference for aquatic vegetation and terrestrial animals such as bugs, molluscs, annelid worms, etc., all depending on what's readily available near them to snack upon at any given time! If you're looking to clean up your tank, the Siamese algae eater is just what you need. These fish are great for beginners and veterans alike because they eat away at pesky green goop in no time! While freshwater aquariums can be a challenging task when it comes to keeping them clean, having an option like this will make those chores much easier on any pet owner whose passion lies with their aquatic pets. With so many benefits that come with owning one of these little critters, there isn't anything not worth mentioning about them! BEHAVIOR: Siamese Algae Eaters are the most social fish in your tank. They love to play with other community aquarium species, and they don't mind when you go on vacation for a week or two either! Siamese Algae Eaters can get along with just about any of their tank mates as long as they have plenty of room to swim around - which is why an aquarium at least ten gallons should be considered before adding them to your home environment. HABITAT: The Siamese algae eater is a type of fish that can be found in freshwater habitats throughout Southeast Asia. They are bottom dwellers and prefer to spend their time near plants or other hiding places on the ground where they feel comfortable and safe. In Thailand, these fascinating creatures live along riversides and flooded forests during this region's rainy season, which provides them with plenty of food sources for survival like edible plant life, insects, worms, crustaceans, including crayfish & shrimp eggs! APPEARANCE: The female Siamese algae eater has a broader midsection than the male fish. This appearance detail is interesting because it creates more of an aesthetic difference between males and females, which can be seen as beneficial for mating or breeding in captivity.  Another interesting trait about these creatures is that they do not have what's commonly called "a swim bladder." If left without any motion, this fish will quickly sink to the bottom of their habitat due to its lack thereof; however, this could also offer some benefit when owning them in captivity since you would need less space with no risk of losing your pets! Side-by-side comparisons are always fun: The female Siamese algae eaters seem like bigger versions compared to males Siamese algae eaters are slender and long fish with a bold black stripe running over their entire bodies. These short, brownish-beige colour fish can be easily identified by one eye-catching strip on each side of the body with an almost clear caudal fin at the end of it all. The Siamese algae eater is most commonly found in aquariums because they do not require much food or water movement to survive but thrive best when given live plants and aquatic animals as part of their diet. SIZE: Siamese algae eaters can get a bit larger than most freshwater tropical fish species that you'll find in various tanks. These bottom-loving fish can grow up to approximately 6 inches (16 cm) and sometimes even longer when given a chance, but they prefer smaller spaces with plenty of hiding spots.  Fish owners should plan for at least 30 gallons in size if considering this pet for their tank- it will give them room to swim comfortably or hide from other aggressive neighbours! Siamese Algae Eaters are rare breeds; unlike many types of freshwater animals who don't need much space, Siamese Algae Eater does best with enough swimming room and places to retreat into safety while being away from predators more. DIFFERENCE BETWEEN SIAMESE ALGAE EATERS AND SIAMESE FLYING FOX FISH: When purchasing a Siamese algae eater for an aquarium, fish owners should be aware of the distinguishing features between this species and the flying fox. For example, the Siamese algae eater has fins that continue onto its back instead of being narrower at its tail end like those found on the flying fox.  In addition, they have 3-4 vertical black lines running down their side while these markings are absent in other varieties such as peacock or guppy, which may confuse purchases. It can sometimes be difficult to tell if a fish you're looking at is just an ordinary Siamese Algae Eater or it's something else entirely... Like Flying Foxes! These two types of aquatic creatures look nearly identical, but there are some important differences. The flying fox has a distinctive gold band that can be seen along the top border of their black stripe, not found on true Siamese algae eaters.  The telltale difference between these two species is in colouration. While both may have an orange-yellow tinge to them, only the flying fox's fins are always clear because they don't have a light golden line around its dark black one like you would find with somebody who's also got it coming off their tails and across their body as well. This animal's appearance varies solely on where it lives; those living near salt water will typically sport lighter colours than individuals from freshwater pools or ponds since they must adapt to prevalent sunlight conditions due to location differences. CARE: One of the most attractive facets of owning Siamese algae eaters is that they are not as hard to care for because you can feed them various foods. However, it's important to know what diseases these fish might be susceptible to and how best to prevent sicknesses before committing yourself completely. Before making your commitment to caring for siamese algae-eaters, do some research into which illnesses could affect this species if neglected or fed incorrectly by researching online from various sources like books on animal behaviour or other websites about aquariums in general. One word of caution is not to overpopulate the tank with too many Siamese. Even though these fish are amazing for their constant tank cleaning action when feasting on algae, it's important to remember that any fish will create body waste which can dirty up your tanks and environment. FEEDING: Feeding your fish the correct food is essential for their health and longevity. If you feed them something that doesn't match what they're used to, it may disrupt their digestive system or interfere with their growth process. For example, a Siamese algae eater eats everything in sight - dead insects, plant matter like seaweed (if available), even other fish! Like most species of aquarium owners know already, feeding each one correctly keeps them happy and healthy as long as possible. Fish are usually picky about who's giving out the grub but Siamese algae eaters can take pretty much anything thrown at 'em because they're omnivores: They'll scavenge any dead insect bits laying around on land or water just waiting. TANK SIZE: Generally, plan to go with a minimum tank size of 25-30 gallons. This will allow them to be active and explore while also having places to hide.  Keep the water pH at 6.5-7 which replicates the slightly acidic conditions these fish encounter in their normal dwelling place in wild streams and rivers that have lower current action when you're keeping Siamese tropical freshwater fish like this one for your aquarium or pond setting set for best results between (25 °C – 26 ° C).  The ideal hardness is 5-20 dH so as not to damage its delicate fins too much against rocks or other hard surfaces it might bump into during an exploratory swim around exploring new waters. TANKMATES: When you want to find a fish that can work well with your Siamese algae eater: Take the time to research what other bottom-dwellers are compatible. Be careful when selecting which ones go together as not all of them will get along peacefully. Avoid Cichlids and red-tailed sharks because they can be more aggressive than others! BREEDING: Siamese algae eaters are notoriously difficult to breed in a regular aquarium setting. Unfortunately, fish experts don't know as much about successfully breeding this species when not at an established fish farm. As a result, most owners end up relying on the farms to expand their numbers of Siamese algae eaters. 

    9 in stock

    $15.00

  • White Cloud Mountain Minnows 2-3cm - Nano Tanks Australia Aquarium Shop

    [ARRIVED 8-SEP-2025] 2-3cm White Cloud Mountain Minnow (Tanichthys albonubes) - The Ultimate Beginner Schooling Fish

    6 in stock

    ☁️ Meet the White Cloud Mountain Minnow: Hardy, Beautiful & Unbeatable Value! Discover the fish that makes aquariums and outdoor ponds effortless! The White Cloud Mountain Minnow is a legendary favorite for a reason. This peaceful, shimmering shoaling fish flashes with brilliant red tails and a striking electric blue stripe, creating constant motion and color without any of the fuss. Extremely hardy and adaptable, White Clouds thrive where tropical fish can't, making them the perfect choice for beginners, cold-water aquariums, and even seasonal ponds. Simply sit back and enjoy their vibrant, active display! HIGHLIGHTS: Incredibly Hardy: Tolerates a wide range of temperatures and water conditions, perfect for beginners. Stunning & Active: Watch their shimmering silver bodies, neon blue stripe, and bright red tails create a dazzling display as they school. Peaceful & Social: A harmless, cheerful resident that does best in groups, making them ideal for community tanks and nano setups. Cold-Water Compatible: Does not require a heater, unlike most tropical fish! FISH CARE & REQUIREMENTS: Scientific Name: Tanichthys albonubes Common Name: White Cloud Mountain Minnow, White Cloud, "The Poor Man's Neon Tetra" Origin: Mountain streams of China (now endangered in the wild) Tank Size: 10 gallons minimum for a small school. The more you have, the more impressive the schooling behavior! Temperament: Very peaceful and excellent for community tanks with other small, non-aggressive fish. Water Parameters: Highly adaptable. pH: 6.0-8.0, Temperature: 64-72°F (18-22°C). They can even handle cooler temps, making them perfect for unheated tanks. Diet: Omnivorous. They eagerly accept high-quality flake food, micro-pellets, and love frozen or live foods like baby brine shrimp and daphnia. Adult Size: 1.5 inches (4 cm) Lifespan: 3-5 years with proper care. WHAT YOU GET: You will receive a group of five (5) live White Cloud Mountain Minnows. For the best appearance and behavior, we recommend groups of 6 or more.Please note: Color can intensify based on diet, water conditions, and during spawning displays. FAQ & KEEPING TIPS Do White Cloud Mountain Minnows need a heater?No! This is their superpower. They are a cool-water species and prefer room temperature water. They can even be kept in outdoor ponds year-round in many climates, as they can survive near-freezing temperatures as long as the water doesn't fully solidify. What are the best tank mates for them?They are incredibly peaceful. Excellent tank mates include other White Clouds, Zebra Danios, Celestial Pearl Danios, Pygmy Corydoras, and peaceful shrimp like Amanos or Ghost Shrimp. How can I encourage them to school tightly?While they will shoal loosely in a planted tank, providing more open swimming space and keeping a larger group (10+) will encourage the beautiful, tight schooling behavior they are known for. Why are they a great choice for beginners?Their hardiness is unmatched. They are forgiving of beginner mistakes and fluctuations in water parameters that would stress more sensitive species. They are also easy to feed and breed! 🏞️ A CLASSIC FOR ANY SETUP!Create a beautiful mountain stream biotope with smooth stones, driftwood, and hardy plants like Java Fern and Anubias. Their colors will pop against a dark substrate and green plants. They are also one of the most popular and rewarding fish for a self-sustaining patio pond! 🔒 LIVE ARRIVAL GUARANTEED: Your fish's health is our priority. We pack with extreme care using breather bags, insulated boxes, and season-appropriate packs. Please be available to receive your shipment for immediate acclimation. Review our live arrival policy for details. Add a school of effortless beauty to your tank. Choose your quantity and add White Clouds to your cart today!

    6 in stock

    $5.00

  • Gold White Cloud Mountain Minnows 2-3cm - Nano Tanks Australia Aquarium Shop

    [ARRIVED 10-APR-2025] Gold White Cloud Mountain Minnows 2-3cm

    1 review

    10 in stock

    Temperature: This species is subject to seasonal temperature fluctuations in nature and is most comfortable between 14 – 22 °C. Permanent exposure to warmer conditions is likely to result in a shortened lifespan and in many countries or well-insulated homes it’s best-maintained without artificial heating year-round. In tests the wild fish from Hainan Island showed a reduced tolerance to cooler temperatures compared with tank-bred specimens, presumably due to their more southerly, i.e., tropical, distribution. pH: 6.0 – 8.5 Hardness: 90 – 357 ppm

    10 in stock

    $6.00

  • Bumblebee Goby 1.5cm - Nano Tanks Australia Aquarium Shop

    [ARRIVED 17-DEC-2025] Bumblebee Goby (Brachygobius spp.) - 1-2cm - Tiny Striped Bottom Dwellers

    83 in stock

    Tiny Striped Personalities for Your Nano Aquarium! Short Description:Discover the charming Bumblebee Goby! These miniature bottom-dwellers pack big personality into their tiny 1-2cm bodies. With their striking yellow and black banding and fascinating behaviors, these nano fish create endless entertainment in small aquariums. Perfect for species tanks and careful community setups. Key Features & Highlights 🐝 BOLD BUMBLEBEE STRIPES: Vibrant yellow and black banding creates stunning contrast against any substrate - a true visual standout in nano aquariums 👁 EXPRESSIVE PERSONALITY: Despite small size, these gobies display curious behaviors, territorial displays, and engaging interactions 🏠 NANO TANK PERFECT: Reaching only 2.5cm maximum, they're ideal for desktop aquariums and small setups (10+ gallons) 🪨 BOTTOM-DWELLING INTEREST: Adds activity and color to the lower levels of your aquarium, often perching on decor and leaves 🔍 FASCINATING TO OBSERVE: Watch their unique movements, territorial behaviors, and interesting feeding habits Detailed Description Meet the Bumblebee Goby - proof that big personalities come in small packages! These captivating nano fish bring a buzz of activity to the bottom levels of your aquarium with their unmistakable bee-like coloration and endlessly entertaining behaviors. Each goby boasts a unique pattern of bold yellow and black bands, making every individual a distinctive addition to your aquatic community. What makes Bumblebee Gobies special is their larger-than-life character. Despite measuring just 1-2cm, they display remarkable behaviors including territorial perching, curious exploration, and comical interactions with tank mates. Their ability to "hop" along the bottom and perch on decorations, leaves, and hardscape adds a dynamic element to any aquarium setup. While they require specific water conditions and targeted feeding, their small size and minimal bioload make them perfect for dedicated aquarists looking to create a specialized nano ecosystem. Their striking appearance and engaging behaviors make them well worth the extra care they require. Perfect For: Nano and desktop aquariums Species-only setups Brackish water environments Experienced micro-fish keepers Bottom-dwelling interest Specifications & Care Guide Parameter Requirement Scientific Name Brachygobius spp. Common Names Bumblebee Goby, Bumblebee Fish Tank Size 10+ gallons Temperature 72°F - 82°F (22°C - 28°C) pH Range 7.0-8.5 Water Hardness Medium to hard (10-20 dGH) Adult Size 2.5-3.5 cm (1-1.5 inches) Diet Carnivorous - live/frozen foods required Lifespan 2-3 years Specialized Care Requirements Tank Setup: Requires multiple hiding spots and territories Prefers fine sand substrate Appreciates brackish conditions (1.005-1.010 SG) Dense planting and decor for perching Diet: Must have live or frozen foods Baby brine shrimp, daphnia, bloodworms May refuse dry foods initially Target feeding recommended Water Parameters: Prefers slightly brackish conditions Stable parameters essential Sensitive to water quality changes Regular small water changes needed Important Considerations ⚠️ EXPERIENCED KEEPERS ONLY: Requires specific water conditions and feeding 🍽️ LIVE FOOD REQUIREMENT: Will often not accept dry foods - must be prepared to provide live/frozen foods 🚫 AGGRESSIVE TENDENCIES: Can be territorial with own species - provide ample space and hiding spots 🌊 BRACKISH PREFERRED: Thrives in slightly brackish water though can adapt to freshwater 🐟 CAREFUL TANKMATES: Keep with peaceful, similar-sized fish - may be bullied by aggressive species 🔬 WATER QUALITY SENSITIVE: Requires pristine, stable water conditions Live Arrival Guarantee Our Bumblebee Gobies are carefully acclimated and conditioned for shipping. Each order includes detailed care instructions and our live arrival guarantee ensures your fish arrive healthy and ready for their new home. Ready to add these striped wonders to your nano aquarium? Bring home Bumblebee Gobies today!

    83 in stock

    $12.00

5 products

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