Half-moon barred butterflyfish
📖 Overview
Half-moon barred butterflyfish (Roa semilunaris) is a ray-finned fish of the family Chaetodontidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 11 cm. It occurs at depths between 102 and 123 metres. With a trophic level of 3.6, it is a mid-level predator.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 20 - 21; Anal spines: 3; Anal soft rays: 16 - 17; Vertebrae: 24. This species is distinguished from its congeners by the following set of characters: pored lateral-line scales 37-41; black blotch present on each membrane associated with first and second dorsal-fin spines; upper jaw is covered with scales; pelvic-fin spine and distal portion of 1st soft ray are whitish, while remaining portions of fin dusky to black; second black body band crossing pectoral-fin base, and is interrupted by many pale narrow lines; ocellated blotch on the dorsal-fin soft-rayed portion semicircular or oval, with long axis/short axis ratio 1.6-2.0 .Cross section: compressed.
🌀 Behaviour
Behavioural data for Half-moon barred butterflyfish is currently being reviewed.
🦐 Diet
Diet information for Half-moon barred butterflyfish is currently being compiled.
🥚 Reproduction
Reproduction data for Half-moon barred butterflyfish is currently being compiled.
🌍 Habitat & Distribution
Marine; reef-associated; depth range 102 - 123 m . Tropical Indian Ocean: Saya de Malha Bank.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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