Black seacatfish

📖 Overview

Black seacatfish (Galeichthys ater), first described by Castelnau, 1861 is a large fish in the family Ariidae (order Siluriformes). Adults typically reach 45.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. The species is venomous and potentially dangerous to handle.

🔬 Taxonomy

🐟 Physical Description

Anal spines: 0; Anal soft rays: 19 - 22. This species is distinguished with the following characters: short head, nearly as broad as long; blunt snout, well-rounded in lateral profile and dorsally; palatal tooth patches posterior to premaxillary tooth band meet at midline; rounded caudal-fin lobes, of near equal length, fin not deeply forked; short and thick caudal peduncle; underside of body (both head and belly) covered with fine brown specks; anterior gill-rakers on first arch 10-13 (5 + 5); pectoral fin rays 9-12; fatty growth along pectoral fin spines of breeding females not present outside spawning season. Dimorphism present with posterior (humeral) process of cleithrum obvious externally, fan-shaped in females, triangular in males; smooth and shallow dorsomedian cranial depression on exposed skull not reaching supraoccipital process .: elongated.

🌀 Behaviour

Behavioural data for Black seacatfish is currently being reviewed.

🦐 Diet

🥚 Reproduction

A paternal mouth brooder.

🌍 Habitat & Distribution

Marine; reef-associated. Subtropical; 34°S - 35°S Southeast Atlantic: South Africa and Namibia.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

📊 Population Risk & Fisheries

⚠️ Venom Profile

References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature

🐠 Related Species

🔍 Similar Species

🗺️ Global Occurrence Map

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

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