Trematocranus is a small genus of haplochromine endemism to Lake Malawi.
Species
There are currently four recognized species in this genus,
with a new species described in 2018.
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Trematocranus brevirostris Trewavas, 1935 ( Incertae sedis)
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Trematocranus labifer (Trewavas, 1935)
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Trematocranus microstoma Trewavas, 1935 (Pointedhead Haplo)
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Trematocranus pachychilus Dierickx, Hanssens, Rusuwa, Snoeks, 2018
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Trematocranus placodon (Regan, 1922)