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Trachelyichthys decaradiatus

Classification

Auchenipteridae

Distribution

Known only from the Rupununi River, Guyana.

Habitat

The river and its tributaries.

Maximum Standard Length

3.2″ (8cm).

Aquarium SizeTop ↑

24″ x 15″ x 12″ (60×37.5x30cm) – 71 litres.

Maintenance

Ideally suited to a heavily planted setup and will show its best colours in such surroundings. It doesn’t appreciate bright conditions and we suggest the use of floating plants to diffuse the light entering the tank. Allow open spaces between areas of planting to allow swimming space.

Water Conditions

Temperature: 68-82°F (20-28°C)

pH: 6.5-7.0

Hardness: 8-15°H

Diet

It prefers live and frozen foods such as bloodworm, earthworms, prawns etc., but most will also take small pellets or flakes. Unlike most Auchenipterids it will usually feed during daylight hours.

Behaviour and CompatibilityTop ↑

Safe with all but the smallest of fry and therefore suitable for most community aquaria. Ideally, keep it in a South American biotope aquarium with tetras, dwarf cichlids and other peaceful catfish such as Corydoras sp. and smaller Loricariids. It’ is totally unaggressive towards conspecifics and is happier when kept in a group.

Sexual Dimorphism

Males have a heavily modifed anal fin, which is used in a similar fashion to the gonopodium possessed by livebearers. Females are much rounder than males when gravid.

Reproduction

Unreported in aquaria.

NotesTop ↑

Very similar to its congener T. exilis, it can be distinguished by looking at the position of the eye which is set much further forward in exilis. Also, the humeral process (long spine extending from the back of the gill plate), is broader and shorter in this species than exilis. Neither are seen very often in the hobby.

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