Melanorivulus Illuminatus

📖 Overview

Melanorivulus Illuminatus (Melanorivulus illuminatus), first described by Costa, 2007 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 Vulnerable.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Rivulidae kept in the hobby.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 9 - 11; Anal spines: 0; Anal soft rays: 12 - 14; Vertebrae: 30 - 31. Differs from all other species of the subgenus Melanorivulus by the possession of six pelvic-fin rays. Can be diagnosed by the unique combination of the following characters: entire flank with longitudinal rows of red dots; head with reduced black pigmentation; presence of a longitudinally elongated white mark above caudal spot in females, vertically elongate spots on caudal fin, often forming bars; dorsal and anal fins in males rounded; caudal fin with 32-33 rays; scales in longitudinal series 33-35; scales in transverse series 8; dorsal-fin origin in vertical through base of 7th or 8th anal-fin ray; and tip of pelvic fin reaching between base of 1st and 3rd anal-fin rays in males .: elongated.

🌀 Behaviour

Behavioural data for Melanorivulus Illuminatus is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 5.9 - ?. Tropical South America: swamp adjacent to córrego da Queixada, rio dos Bois drainage, rio Paraná basin in Brazil.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🦠 Common Diseases

The following diseases are known to affect Melanorivulus Illuminatus.

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute