Trigonectes Macrophthalmus (Trigonectes macrophthalmus) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters. This species can reach a maximum total length of 8 cm. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
Dorsal soft rays (total): 10 - 12; Anal soft rays: 16 - 17. Having curved mouth cleft; large eyes with orbital diameter 10.4-11.5% SL in adult males; body depth 22.1-22.2% SL in adult males; head length 30.6-32.7% SL in juveniles; and pelvic length 56.4-59.1% SL .
Behavioural data for Trigonectes Macrophthalmus is currently being reviewed.
Freshwater; benthopelagic; non-migratory. Tropical South America: Guaporé River basin.
The following diseases are known to affect Trigonectes Macrophthalmus.
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