吻沟非鲫

Overview

The large Malawian cichlid Fossorochromis rostratus is a fast, active swimmer that feeds by processing sand. It may also bury itself when startled. A generous open layout with fine sand is therefore much more appropriate than an aquarium packed with rocks.

Distribution & habitat

Endemic to Lake Malawi, it is particularly associated with shallow sandy areas.

Aquarium setup

Place rocky caves mainly around the edges and preserve unobstructed swimming room. This reduces collision risk during rapid movement. Sand is essential: coarser gravel can injure a fish while it feeds or buries itself. Breeding accommodation should also offer broad sand patches and some flat rocks.

Diet & feeding

Live and frozen foods should make up a substantial part of the menu, especially invertebrates such as Artemia, shrimp, and bloodworms. Fish flesh is commonly refused and is not an appropriate staple. That preference does not make tiny live tankmates safe.

Behaviour & compatibility

Maintain a group with several females for each male. Avoid boisterous rock-dwelling cichlids, and choose companions too large to be eaten. Although usually peaceful, males defend breeding sites; housing multiple dominant males takes exceptional space.

Sexual dimorphism

Dominant males become conspicuously colorful. Females and subordinate males resemble one another, so subdued color alone cannot establish sex.

Breeding

Captive reproduction is relatively uncommon and involves maternal mouthbrooding. Starting with eight to ten juveniles allows a breeding group to develop. One male with three to six females is a useful eventual arrangement. The male selects a rock or excavates a depression and defends the surrounding space, potentially claiming much of a limited aquarium.

The female gathers freshly laid eggs and responds to the male's anal-fin spots during fertilization. She holds the brood for approximately three weeks without feeding. Stress can cause premature release or brood loss, while prolonged separation may affect her position on return to the group. Move her cautiously only when needed. Newly released young accept Artemia nauplii and crushed flakes; frequent small meals support rapid growth. A female left with her fry may continue sheltering them in her mouth at night or during disturbance for several more weeks.