Hemigrammus Arua
📖 Overview
Inhabits shallow marginal areas, with abundant aquatic macrophytes, both emergent and non-emergent . Gut contents of four specimens include insect larvae, winged insects and plant matter .
🔬 Taxonomy
🐟 Physical Description
Dorsal soft rays (total): 11 - 12; Anal soft rays: 21 - 25; Vertebrae: 31. Distinguished from all species of the genus, except Hemigrammus stictus (Durbin), by having a large single humeral spot situated from fifth-sixth to posterior margin of eighth-tenth lateral line scales. Differs from Hemigrammus stictus by having a humeral spot roughly rectangular, higher than wide, with a pronounced upper, anteriorly-oriented extension, conferring an inverted-comma shape to the blotch (vs. humeral spot roughly rounded, not presenting an inverted-comma shape), and life color pattern presenting unpaired fins orange reddish (vs. caudal fin and caudal peduncle bright red in life, remaining fins translucent) . : short and / or deep.
🌀 Behaviour
Behavioural data for Hemigrammus Arua is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Freshwater; benthopelagic; depth range 1 - 2 m . Tropical South America: headwaters of the rio Arapiuns, rio Tapajós basin, and from the adjacent headwaters of the igarapé Juruti Grande, rio Amazonas in Brazil.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🦠 Common Diseases
The following diseases are known to affect Hemigrammus Arua.
🔍 Similar Species
👥 Community & Contribute
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