Laimosemion Jauaperi (Laimosemion jauaperi), first described by Costa & Bragança, 2013 is a tiny fish in the family Rivulidae (order Cyprinodontiformes). Adults typically reach 1.90 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 Least Concern.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): 6 - 7; Anal soft rays: 8 - 9; Vertebrae: 31. This species is distinguished from its congeners and all species of other genera of the subfamily Rivulinae by the following characters: pelvic-fin rays 4 in females, 5 in males(vs. 5-7 in both sexes of other congeners, 6-9 in other rivulines), branchiostegal rays 4 (vs. 5-6); anterior portion of anal fin, involving the space occupied by the first two fin rays, white in both sexes; differs from all its congeners, except L. uatuman, by having the caudal fin dark coloured in males (dark crimson red in L. jauaperi, dark grey in L. uatuman) with a contrasting distal white band (vs. caudal fin never dark coloured, distal white band absent); further differs from L. uatuman by having caudal fin dark crimson red in both sexes (vs. dark grey in males, hyaline in females) and with five pelvic-fin rays in male and four in female (vs. six in both sexes) .Cross section: oval.
Behavioural data for Laimosemion Jauaperi is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: Brazil.
The following diseases are known to affect Laimosemion Jauaperi.
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