Otopharynx heterodon

Otopharynx heterodon takes its name from its heterodont dentition — a mix of different tooth shapes within the jaw that allows it to manipulate and process a variety of prey items from sandy substrates. This sand-dwelling species is among the more peaceful Otopharynx and integrates well in mixed Hap and Peacock communities where less aggressive fish are kept.

Males develop an attractive grey-blue base coloration with subtle horizontal banding and pale blue-white scale edges that create a delicate shimmering effect under aquarium lighting. The colors are understated compared to some of its congeners but have a refined elegance appreciated by experienced cichlid keepers.

This is a maternal mouthbrooder that breeds readily in well-maintained aquaria. Females are cryptic grey. The species forages over sandy substrate constantly and appreciates a fine sand floor of at least 5 cm depth. Works well paired with Lethrinops, Tramitichromis, and Aulonocara Peacocks in a sand-dominated Malawi biotope.

Water: pH 7.6–8.8, 24–28°C, GH 10–20, KH 10–18; pristine soft-alkaline conditions; moderate filtration. Tank: 250 L minimum; fine sand substrate 5+ cm deep; minimal rock; open sandy floor for foraging behavior. Feeding: Omnivore pellets, frozen mysis, small krill, and occasional spirulina; feed twice daily. Breeding: Easy maternal mouthbrooder; females hold ~3 weeks; breed readily without intervention in a species tank. Compatibility: Peaceful; excellent with other sand-dwelling Haps, Lethrinops, Aulonocara; avoid aggressive mbuna.