Melanorivulus Planaltinus
📖 Overview
Melanorivulus Planaltinus (Melanorivulus planaltinus) is a ray-finned fish of the family Rivulidae. It inhabits freshwater waters. This species can reach a maximum total length of 3.1 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 8 - 10; Anal soft rays: 12 - 14. Belongs to the subgenus Melanorivulus by having all the subgeneric synapomorphic characters: short and pointed dorsal portion of preopercle; melanophores concentrated on opercular region to form oblique stripes; melanophores concentrated on margins of unpaired fins in females; black spot on upper portion of caudal-fin base not close to fin margin in females. Differs from all other species of Melanorivulus by the following characters: lack or extreme reduction of pelvic fins and pelvic girdle; vomerine teeth 5-7; and basihyal width about 70% basihyal length .: elongated.
🌀 Behaviour
Behavioural data for Melanorivulus Planaltinus is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic. Tropical South America: known only from the type locality in the Cocal River floodplains, Maranhão River drainage, upper Tocantins River basin in Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Melanorivulus Planaltinus.
🔍 Similar Species
👥 Community & Contribute
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