Melanorivulus Leali (Melanorivulus leali), first described by Costa, 2013 is a tiny fish in the family Rivulidae (order Cyprinodontiformes). Adults typically reach 2.90 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.
Dorsal soft rays (total): 9 - 11; Anal soft rays: 13 - 15; Vertebrae: 31 - 32. This species differs from all congeners by having red dots on body side arranged in chevron shaped rows with angle on the midline of the flank, a broad dark grey stripe along the whole flank, flank light blue in males, dorsal and ventral portions of the caudal fin light orangish red in males, conspicuous orangish red bars on the middle of the caudal fin in males, dorsal portion of the caudal-fin base with a small vertically elongated black spot, and a black bar on the anterior and another on the posterior portion of the iris almost in contact with the pupil . : elongated.
Behavioural data for Melanorivulus Leali is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: Brazil.
The following diseases are known to affect Melanorivulus Leali.
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