Max Size: 2cm

Toucan Tetra (Tucanoichthys tucano)

The Toucan Tetra is unique and is not regularly seen, making them highly sought after in the aquarium hobby. They are peaceful, friendly by nature and are a shoaling fish rather than a schooling fish. You can often see the rival males sparring regularly for territory.

This Tetra is not ideal for community aquariums due to their small size, but nano tanks or small planted aquariums will be perfect for this little Tetra. It would be best if you provided these Tetras with plenty of hiding spaces.

It is best to keep 8-10 of these fish together as this will stop the fish from being so shy, and you will be able to see them displaying much more exciting behaviour.

Toucan Tetras have a gold upper body and head and a white belly. There is a pinkish-bluish hue to the lower gill. Some individuals' top lobes are coloured gold, but the fins themselves are usually transparent. Starting at the gill and extending to the caudle peduncle, the sides of the body are marked by a distinct dark stripe.


Toucan Tetra
Toucan Tetra
Toucan tetra
Toucan Tetra
Quick Facts
Scientific NameTucanoichthys tucano
Year Described1997
Other NamesNone
Aquarium LevelMiddle - Top
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Lifespan5 - 7 years
Water Parameters
Water TypeFreshwater
PH4.0 - 7.0
GH8 - 16
KH4 - 7
TDS180 - 250
68 - 74℉
20 - 23.3℃


In the home aquarium, the Toucan Tetra will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Sexual Dimorphism

It is relatively simple to determine which fish are males and females. Males are much more intensely coloured than females with a pinky-red pigmentation in the dorsal, caudal and anal fins whereas the females are duller and seem to be more rounder bodied than the males especially when full of eggs.

Other Tetras of interest

Adonis Tetra(Lepidarchus adonis)
African Moon Tetra(Bathyaethiops caudomaculatus)
African Red Eyed Tetra(Arnoldichthys spilopterus)
Arowana Tetra(Gnathocharax steindachneri)
Black Darter Tetra(Poecilocharax weitzmani)
Black Line Tetra(Hyphessobrycon scholzei)
View all Tetras
Date Added: 06/10/2020 - Updated: 19/10/2022 14:11:06