类甲鲶 · Marbled Whiptail

Overview

Fishes traded as Loricaria simillima have uncertain identities and may include several taxa. Male care of an egg cluster held against the lower lip makes them interesting breeding subjects, but aquarium observations under this name cannot automatically be assigned to the true species.

Distribution & habitat

Records under the name extend from Venezuela and Ecuador through Peru, Brazil, Paraguay, and Argentina; some may prove to involve other species. Reported habitats include blackwater and whitewater streams and rivers, with darker and lighter trade forms associated with different environments.

Aquarium setup

A pair of the traded form can use roughly 75 by 30 by 30 cm, while a group needs more room. Soft sand, wood, smooth rocks, and pipes create shaded retreats. Plants can provide additional cover without normally being damaged.

Diet & feeding

Provide plentiful small live or frozen invertebrates, including bloodworms, water fleas, or chopped earthworms. Sinking prepared foods and occasional vegetables add variety.

Behaviour & compatibility

Quiet behavior makes food competition a concern. Choose small peaceful fishes or compatible catfishes, avoiding very territorial loricariids. The traded forms are usually amicable with one another and can be maintained in groups.

Sexual dimorphism

Males develop enlarged mouthparts as they mature.

Breeding

Aquarium spawning has occurred in the traded form. A small group helps obtain a pair; condition it with varied food and weekly changes around 40–50%. Following nighttime spawning, the male carries eggs at his lower lip. Separate other fishes to reduce fry predation. He ventilates the clutch for about ten to fifteen days, though some males eat or release eggs early. After successful hatching, yolk absorption takes another two to three days. Nauplii, microworms, and crushed prepared foods can then be offered. Fry need constant food access and careful maintenance because starvation and water-chemistry changes are serious problems.