Pretty Peckoltia
Dekeyseria brachyura
Also known as: Chameleon Plec, Flounder Plec
A colour-shifting pleco that adapts its pattern to match its surroundings.

About
A fascinating loricariid from the Lower Negro River basin in Brazil, Dekeyseria brachyura goes by several names in the hobby, pretty peckoltia, flounder plec, and chameleon plec, that last one being the most fitting. This fish actively shifts its coloration to blend with the substrate and nearby surfaces, and it even displays a distinctly different pattern after lights out. Its flattened body profile gives it that flounder-like silhouette, and its striped patterning tends to be more clearly defined than in the closely related Orinoco species it resembles. Taxonomically it has had a winding history, having been known as Peckoltia pulcher and at times placed in the invalid genus Zonancistrus, and its relationship with D. pulcher remains unresolved. In the aquarium it is a peaceful community resident, doing particularly well in a soft, acidic, well-oxygenated setup alongside characins and other current-loving species. An herbivore by preference, it needs reliable access to plant-based foods. Breeding has been accomplished by hobbyists, with males guarding eggs inside caves and tending the fry after hatching. One practical note. Handle this species carefully when netting, as the spines on the snout and pectoral fins snag mesh easily. When purchasing, look for a rounded belly and alert eyes, since sunken eyes and a pinched abdomen are warning signs in newly imported specimens.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Pretty Peckoltia
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Pretty Peckoltia get?
- The Pretty Peckoltia reaches about 4–6.5" as an adult.
- What size tank does the Pretty Peckoltia need?
- A minimum of 29 gallons is recommended for the Pretty Peckoltia.
- What water parameters does the Pretty Peckoltia need?
- The Pretty Peckoltia does best with a temperature of 72–82°F, a pH of 5.5–7.5, hardness around 2–16 dGH.
- Is the Pretty Peckoltia aggressive?
- The Pretty Peckoltia is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Pretty Peckoltia eat?
- The Pretty Peckoltia is a herbivore. It needs a plant-based diet such as algae, blanched vegetables, or spirulina-based foods.
- How long does the Pretty Peckoltia live?
- With good care, the Pretty Peckoltia typically lives 5-8 years.