Melanorivulus Dapazi (Melanorivulus dapazi), first described by Costa, 2005 is a tiny fish in the family Rivulidae (order Cyprinodontiformes). Adults typically reach 3.20 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Rivulidae kept in the hobby.
Distinguished from all other species of the R. punctatus group in having an anal fin with an orange distal stripe (vs. orange distal stripe absent) and caudal fin with marginalregion dark orange with black ventral outline in males (vs. never a similar pattern). Differs from all other species from the Paraná-Paraguay basin by the combination of the following features: flank with chevron-like red lines (vs.oblique rows of red dots), flank with dark gray stripe along midline (vs. strike absent), and 34-35 scales on the longitudinal series (vs. 30-32 as in all other species of the rio Paraguay basin).: elongated; Cross section: circular.
Behavioural data for Melanorivulus Dapazi is currently being reviewed.
Freshwater; pelagic. Tropical South America: upper section of the rio Correntes drainage, rio Paraguay basin, central Brazil.
The following diseases are known to affect Melanorivulus Dapazi.
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