Giant freshwater whipray
📖 Overview
Inhabits sandy bottoms in estuaries and large rivers . Feeds on benthic invertebrates and fishes . Ovoviviparous . Caught occasionally by demersal gillnet and longline fisheries operating in riverine and estuarine areas. Utilized for its meat and possibly its cartilage. Marketed fresh, with large individuals being sold in cut pieces by the kilogram . Size reaches to about 500 cm TL. Threatened due to over harvesting and pollution .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0. Absence of ventral and dorsal skin folds on the tail, and the broad greyish to blackish marginal band on the ventral surface of the disc. The dorsal surface of the disc is brown . Spiral valve with 21 turns; dorsal surface with uniform brown or grey coloration . Lacking caudal fin; with long whip-like tail .: other.
🌀 Behaviour
Behavioural data for Giant freshwater whipray is currently being reviewed.
🦐 Diet
🥚 Reproduction
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures . Distinct pairing with embrace . Young are born at about 30 cm disc width .
🌍 Habitat & Distribution
Freshwater; brackish; demersal; potamodromous . Tropical; 25°N - 20°S
🌿 Ecology
benthic invertebrates (Ref
📐 Morphometrics
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
⚠️ Venom Profile
- intense pain
- laceration
- oedema
- retained spine fragments possible
Wound care, imaging for retained spine, tetanus prophylaxis, antibiotic prophylaxis for marine wounds.
References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🔍 Similar Species
👥 Community & Contribute
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