牛目大眼非鲫

Overview

Active and space-demanding, Ophthalmotilapia boops combines male rivalry with sensitivity to domination by more forceful fishes. A bullied individual may withdraw and lose color, so activity level alone should not determine its companions.

Distribution & habitat

This Lake Tanganyika endemic is restricted to the southern Tanzanian shoreline, where it inhabits rocky slopes and drop-offs.

Aquarium setup

Arrange scattered rock shelters around broad open swimming areas and a sand bed. Established biological filtration is essential. Wood and hard-water-tolerant plants are optional additions. Leave ample sand exposed when planning for breeding.

Diet & feeding

Most foods are accepted, but protein-heavy varieties should be avoided. Include plant material such as softened spinach or spirulina-rich preparations. Broad food acceptance should not lead to an exclusively concentrated animal-food menu.

Behaviour & compatibility

Choose calm companions that will not suppress it, avoiding boisterous rock-dwelling cichlids. Male rivals are treated aggressively; one male with several females is preferable except in exceptionally large systems. Multiple females spread courtship pressure, though weaker fish still require observation.

Sexual dimorphism

Males become larger and more colorful, with longer fins, particularly the pelvics.

Breeding

Females incubate the brood orally. The male excavates a craterlike site in sand and displays around it. Eggs are collected immediately after laying; the female's attraction to structures at the tips of his extended pelvic fins facilitates fertilization.

She carries the brood for approximately three weeks without feeding, developing an enlarged mouth. Stress can cause early release or brood loss. Avoid unnecessary early transfer unless she is being harassed, and consider how a long absence may affect her return to the group. Released fry accept Artemia nauplii and powdered spirulina flakes immediately.