Kieser Pleco

L003 Kieser Pleco is a robust, dark-colored Baryancistrus from the Rio Tocantins in Brazil. The body is covered in light spots and adult fish can reach about 25 cm.

L003 has a compact and robust body build with a broad head and large pectoral fins. The base color is usually dark grey to almost black, and over the body and fins there are many light, often white or greyish-white spots. A very light, so-called xanthoric color variant has also appeared in the trade. The species can reach about 25 cm, which makes it considerably larger and more robust than many smaller L-catfish. It is sometimes confused with Baryancistrus niveatus (L026), which occurs in the same region and has a similar spotted appearance. A typical characteristic of the genus Baryancistrus is a skin membrane connecting the rear part of the dorsal fin with the adipose fin. This can be useful when identifying against several related genera. scotcat.com Adult fish can be territorial, especially towards other Baryancistrus and individuals competing for the same hiding places. Mature males usually develop a broader and longer head as well as stronger pectoral fin rays and more distinct odontodes.

L003 needs a spacious, warm and oxygen-rich aquarium with strong filtration, rock formations and several hiding places. Adult individuals can be territorial and need plenty of floor space.

Since the species can reach about 25 cm, it should not be considered a small pleco. For an adult fish, an aquarium of at least about 300 liters is suitable, while several individuals require considerably larger floor space and well-thought-out aquascaping. Stones, rock-like formations, roots and caves create natural hiding places and visual barriers. This is especially important if several large L-catfish are kept together, since dominant individuals could otherwise control attractive hiding places. L003 comes from the Rio Tocantins and appreciates warm, well-oxygenated water. Different sources state approximately 23–30 °C, but around 25–28 °C is a suitable practical range in the aquarium. A pH around 6.5–7.2 works well.

Strong filtration and regular water changes are important. The combination of high temperature and large fish means the oxygen level could otherwise quickly become insufficient. Good circulation at the bottom also helps transport waste toward the filter. The species is not the best choice for a newly set-up aquarium. Stable water quality and an established environment are an advantage, and adult individuals can be considerably more territory-claiming than young fish.

Breeding of L003 is very poorly documented. The species is assumed to be a cave-spawner like other related L-catfish, but there are few or no well-documented aquarium spawns to go by.

Unlike many popular Hypancistrus and Ancistrus, there is very little concrete information about reproduction in L003. PlanetCatfish specifically lists breeding as “unreported” and lacks registered breeding reports for the species.

L003 is usually described as a cave-spawner, which is consistent with the reproductive strategy of many closely related loricariids. However, this should be distinguished from a detailed, documented breeding method specifically for L003.

When attempting breeding, adult fish should be offered several large and deep caves where a male can establish a territory. Since the individuals grow large, the caves need to be considerably more spacious than those used for smaller species such as L066 or L134. Sexing becomes easier on fully grown fish. Males tend to have a broader head, longer and stronger pectoral fin rays, and more developed odontodes than females.

Since reliable information about temperature changes, clutch size, incubation time and fry development is lacking for L003, such data should not be presented as established facts. The species should therefore be regarded as a considerably more challenging breeding fish than many common L-catfish.

L003 is an omnivorous Baryancistrus with a clear vegetable component. The diet should include algae- and plant-based food, vegetables and smaller amounts of animal protein.

The staple diet can consist of sinking tablets and pellets with a high proportion of vegetable ingredients, such as spirulina and other algae. Zucchini, cucumber and other soft vegetables can be given regularly.

Unlike truly wood-eating genera such as Panaqolus, L003 does not need to live on or consume large amounts of wood. Roots are still useful because they create hiding places and develop a natural coating of algae and biofilm that the fish can graze on. Animal food should also be part of the diet. Shrimp, mussel, insect larvae and protein-rich sinking food can be given as a supplement. Both vegetable and animal food are recommended for the species.

A varied diet is better than large amounts of very protein-rich food. Adult fish can easily become dominant at feeding, so if several bottom-dwelling fish are kept together, the food should be distributed across several places. L003 is often most active when the lighting is dimmed. Evening feeding therefore allows more cautious individuals to eat without competition from diurnal fish.