石爬大咽非鲫 · Sulphur-headed Hap

Overview

The Malawian cichlid Otopharynx lithobates strongly favors rocky shelter and seldom remains in open water, even in captivity. Breeding males develop blue body coloration with a yellow-orange head top and dorsal fin, obscuring the flank spots visible in less intense dress.

Distribution & habitat

It is endemic to Lake Malawi, with records around Domwe Island, Monkey Bay, Thumbi, Mumbo, and other localities. Caves and narrow spaces within rocky habitats are characteristic refuges.

Aquarium setup

Build several caves with open areas between rock piles, preferably over sand. Hard-water-tolerant plants and wood are optional. Place retreats in different areas so females can avoid repeated male courtship.

Diet & feeding

Most foods are accepted. Live and frozen items should make up the larger share of a varied menu, including when adults are being conditioned for breeding.

Behaviour & compatibility

It is relatively peaceful toward suitable hard-water companions but eats small fishes. Avoid boisterous rock-dwelling cichlids. Several females per male help distribute attention; territorial defense and vigorous pursuit increase during spawning.

Sexual dimorphism

Males become larger and much brighter. Where several males occur, only the dominant one may show full reproductive coloration, so subdued color does not reliably indicate a female.

Breeding

Use a dedicated setup with one male and at least three females. A sheltered flat stone near the bottom is a likely spawning surface. As the pair circles, eggs are laid, fertilized, and progressively gathered into the female's mouth.

She may hold the brood for up to four weeks without feeding. Stress risks premature release or brood loss. Avoid unnecessary early transfer when she is not being harassed, and consider her social position after a long absence. Swimming fry take Artemia nauplii. Early manual removal is a technique used by some breeders, not a requirement for natural mouthbrooding.

Notes

Misapplied generic names and broad red-top trade labels have caused confusion. Reproductive color also hides the three ordinary flank spots, so identification should consider the fish's condition.