Blackline myleus

📖 Overview

This species was reported to inhabit slow-flowing habitats such as backwaters and lake, feedng mainly on aquatic and terrestrial plants. Collection localities include clearwater rivers chemically characterized by a low concentration of suspended sediments, dissolved minerals and humic compounds and also from extremely acidic oligotrophic blackwaters. The type locality is also a blackwater system that has its headwaters in the Purus-Madeira interfluvium and like other blackwater rivers, is of low sediment load and low pH. These blackwater environments are reported to be inhospitable to certain species of fish .

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 25 - 29; Anal soft rays: 33 - 38. This species is distinguished from its congeners by the following characters: highly concentrated dark chromatophores on the lateral-line scales, resulting in a markedly, dark pigmentation along the lateral line; it differs from arnoldi, lobatus, lucienae, planquettei, rhomboidalis, schomburgkii, zorroi by having 25-29 branched dorsal-fin rays (vs. 18-24); from ternetzi by the presence of a symphyseal pair of conical teeth posterior to the main row of dentary (vs. absence); from asterias, levis, rubripinnis, taphorni, tiete, torquatus, tumukumak by having 89-114 lateral line scales from supracleithrum to end of hypural plate (vs. 56-89) and 98-120 total perforated lateral line scales (vs. 59-97) .Cross section: compressed.

🌀 Behaviour

Behavioural data for Blackline myleus is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Brazil.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

👥 Community & Contribute