Exallodontus Aguanai

📖 Overview

Exallodontus Aguanai (Exallodontus aguanai), first described by Leccia & Nass, 1991 is a medium-sized fish in the family Pimelodidae (order Siluriformes). Adults typically reach 20.00 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. Recorded depth range: 20 to 30 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 6; Anal soft rays: 11 - 14; Vertebrae: 46 - 50. Distinguished by having 2-3 rows of heavy, firmly attached conical teeth on premaxillae and dentaries; lacrimal (= infraorbital 1+2) shaped as an obtuse-angled triangle with nearly straight sides; relatively long, nearly straight-margined adipose fin (its length 2.0-2.5 in SL); short dorsal fin spine, low dorsal fin (spine length 5.6-8.6 in SL); relatively small head (head length 4.0-5.2 times in SL); small eye (horizontal diameter 3.4-5.5 times in snout length, 7.4-12.0 times in head length); neural spines of vertebrae 13 or 14 - 23 or 24 oriented 90°to horizontal axis of centra; supraoccipital process with a narrow median keel above somewhat concave sides, markedly angular in cross-section, slender and tapering to its peg-and-socket joint with supraneural (basal width of supraoccipital process about 2 times in length); anterior anal-fin rays broad, forming a paddle-like blade; posterior nostril ovoid, its long axis oriented transversely .Cross section: oval.

🌀 Behaviour

Behavioural data for Exallodontus Aguanai is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Freshwater; demersal; depth range 20 - 30 m . Tropical South America: Amazon and Orinoco River basins.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🔍 Similar Species

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

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