Cave-dwelling; males have been observed defending small caves with sandy bottom mostly against conspecific males . Unicuspid teeth suggest diet of larger invertebrates or even fish .
Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 9 - 10; Anal spines: 3 - 4; Anal soft rays: 8 - 9. A small to medium-sized cave-dwelling haplochromine with relatively deep body depth with greatest body depth at base of seventh or eighth dorsal spine . Otopharynx antron has a larger eye, 31.4-34.7% of head length, than most other Otopharynx species. It has fewer lateral-line scales (29-31) than Otopharynx argyrosoma and a larger lower-jaw length than Otopharynx heterodon . It is distinguished from Otopharynx spelaeotes and Otopharynx lithobates by its primarily unicuspid teeth in the outer rows of the oral jaws, by its smaller horizontal eye diameter, by a deeper caudal peduncle, and additionally from O. spelaeotes by having fewer teeth in the outer row of the left lower jaw (15-19) .
Behavioural data for Otopharynx Antron is currently being reviewed.
Freshwater; demersal; depth range 10 - 60 m . Tropical
The following diseases are known to affect Otopharynx Antron.
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