Collection: Otocinclus for Sale – Peaceful Algae-Grazing Nano Catfish

Shop Otocinclus for sale at Tropical Treasures Wyo in Cheyenne, Wyoming. Otocinclus, often called Otos or Oto Catfish, are small freshwater catfish commonly kept in planted aquariums and peaceful community tanks.

Otocinclus are known for grazing on soft algae and biofilm from aquarium surfaces, plants, and décor. They can be a good choice for mature planted aquariums with stable water conditions and compatible tankmates. Live Otocinclus are available for in-store purchase or local pickup only. Live livestock shipping is not available at this time.

Why Choose Otocinclus?

Otocinclus are popular with aquarists who want a small, peaceful algae-grazing fish for established freshwater aquariums. Their small size and calm behavior make them a good fit for many planted tanks, nano aquariums, and peaceful community setups.

While Otocinclus can help graze on soft algae and biofilm, they do not replace regular aquarium maintenance. They should be offered supplemental foods when natural algae and biofilm are limited.

Otocinclus Catfish: Scientific Name and South American Habitat

Otocinclus catfish, often called oto catfish, belong to the genus Otocinclus within the armored catfish family Loricariidae. Their scientific name depends on the particular species; aquarium-store Otocinclus are not always identified to species level. These small freshwater fish originate in South America, where different Otocinclus species live among vegetation, submerged wood, and other surfaces in streams and rivers.

Otocinclus Tank Size and Group Care

For a small group of Otocinclus, an established aquarium of about 20 gallons or larger is a practical starting point, with greater space for larger groups and active tank mates. Tank size alone is not enough: mature surfaces with natural biofilm, stable water quality, suitable flow, and adequate food matter just as much. Otocinclus are social; aim for a compatible group rather than keeping one isolated fish.

Feeding Otocinclus: Biofilm, Vegetables and Algae Wafers

Otocinclus graze on soft algae and biofilm, but they are not an automatic cleanup crew for every type of aquarium algae. Provide established grazing surfaces and monitor their body condition. Supplement natural foods with suitable algae wafers, plant-based sinking foods, or small portions of blanched vegetables when needed. Not every Otocinclus accepts prepared foods immediately, so check that the fish are actually eating and remove leftovers to protect water quality.

Otocinclus as Part of a Peaceful Aquarium Cleanup Crew

Otocinclus can complement freshwater snails, shrimp, and other peaceful species in a mature planted aquarium. Their gentle grazing does not replace water changes, algae management, or filter maintenance. Avoid aggressive tank mates and take care when acclimating newly purchased fish, since sudden temperature or water-chemistry changes can cause stress. Ask the Tropical Treasures Wyo team about feeding and compatibility before adding a group to your aquarium.

Key Features

• Small Freshwater Catfish: Popular nano-sized catfish for planted aquariums
• Peaceful Temperament: Best with calm, compatible community fish
• Algae & Biofilm Grazer: Grazes on soft algae, biofilm, and aquarium surfaces
• Best in Groups: Social fish that usually do better when kept with others of their kind
• Good for Mature Aquariums: Best added to stable, established tanks with available grazing surfaces
• Local Pickup Only: Live fish are available for in-store purchase or local pickup only

Great for Planted Aquariums

Otocinclus are often used in planted aquariums because they graze on soft algae and biofilm from leaves, glass, hardscape, and décor. They are small and peaceful, making them a good option for aquariums with calm tankmates and stable water parameters.

These fish are best added to mature aquariums rather than brand-new tanks. New aquariums may not have enough natural algae or biofilm, so supplemental feeding is important.

Ideal Tank Mates

• Tetras
• Rasboras
• Corydoras catfish
• Peaceful livebearers
• Freshwater snails
• Freshwater shrimp in well-planted setups
• Other peaceful nano and community fish

Avoid keeping Otocinclus with aggressive fish, large predators, or highly competitive tankmates that may stress or outcompete them for food.

Otocinclus Care Tips

• Keep in groups when tank size allows
• Add to mature, stable aquariums rather than brand-new setups
• Provide soft algae, biofilm, and supplemental foods as needed
• Offer algae wafers, Repashy-style gel foods, or blanched vegetables when natural grazing is limited
• Avoid aggressive or boisterous tankmates
• Acclimate carefully, as Otocinclus can be sensitive to sudden changes
• Maintain stable water quality with regular maintenance

Shop Otocinclus Locally in Cheyenne, Wyoming

At Tropical Treasures Wyo, we offer Otocinclus for planted aquariums, nano tanks, and peaceful freshwater community setups. These small algae-grazing catfish are best for mature aquariums with stable water quality and compatible tankmates.

Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Otocinclus, freshwater community fish, nano fish, live aquarium plants, algae wafers, sinking foods, filtration supplies, and aquarium care products. Live fish are available for in-store purchase or local pickup only.

Otocinclus FAQ

Are Otocinclus good for beginners?
Otocinclus can be peaceful and manageable, but they are best added to mature, stable aquariums rather than brand-new tanks. New aquariums often do not have enough natural biofilm or algae for them to graze on.

What do Otocinclus eat?
Otocinclus primarily graze on soft algae and biofilm. They should also be offered supplemental foods such as algae wafers, Repashy-style gel foods, or blanched vegetables when natural grazing is limited.

How many Otocinclus should I keep?
Otocinclus are social fish and usually do best in groups. A group of 6 or more is often recommended when tank size and filtration allow.

What are good tank mates for Otocinclus?
Good tank mates may include peaceful community fish such as tetras, rasboras, Corydoras catfish, peaceful livebearers, freshwater snails, and shrimp in well-planted setups.

Are Otocinclus shrimp safe?
Otocinclus are commonly kept with freshwater shrimp because they are peaceful algae grazers. Very small baby shrimp may still benefit from dense plants, moss, and hiding places.

Do Otocinclus replace aquarium cleaning?
No. Otocinclus can help graze on soft algae and biofilm, but they do not replace water changes, glass cleaning, filter maintenance, or proper feeding habits.

Can Otocinclus be shipped?
No. Live Otocinclus are available for in-store purchase or local pickup only at Tropical Treasures Wyo in Cheyenne, Wyoming.