Thomas' Chaetostoma (Chaetostoma thomsoni)

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Thomas' Chaetostoma

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Thomas' Chaetostoma

Chaetostoma thomsoni

95 Litres (25 US G.)

7.6-10.2cm (3-4 ")




7.2 - 7.5

23 -28 °C (73.4-82.4°F)

8-12 °d

1:1 M:F

Pellet Foods
Flake Foods
Other (See article)

5-8 years



Additional names

Thomas' Chaetostoma

Additional scientific names

Chaetostomus thomsoni

Origin[edit | edit source]

South America: Magdalena River basin in Colombia.

Sexing[edit | edit source]

Male has larger pelvic fins, broader/larger head and slimmer sides.

Tank compatibility[edit | edit source]

Peaceful, but can be territorial towards other Plecos. Small fish and fry can be viewed as dinner, keep with mid-swimming fast fish such as larger Tetras.

Diet[edit | edit source]

Omnivore, they eat algae, but will readily accept sinking pellets, vegetables and live/frozen food.

Feeding regime[edit | edit source]

Feed once or twice a day.

Environment specifics[edit | edit source]

Requires highly oxygenated water. Likes a fine sand substrate with smooth large rocks, some hiding places are beneficial also.

Behaviour[edit | edit source]

A generally peaceful Pleco towards tank mates, may be territorial towards other Plecos however.

Identification[edit | edit source]

The name C. thomsoni has been misapplied in the hobby for years. It is commonly used in the hobby for a small grey Colombian Chaetostoma with dark edging to its scutes and dark spots on the head and rostrum. There has been a description of a fish with no dark markings. In fact C. thomsoni may in fact belong to the genus Lasiancistrus and not be a Chaetostoma at all.

Pictures[edit | edit source]

External links[edit | edit source]