Cape knifejaw
📖 Overview
Found in coastal waters down at a depth of about 150 m. Adults found near reefs, juveniles found near floating objects. Feed on benthic invertebrates and algae . May live longer than 10 years. Spawning occurs throughout the year . Rarely hooked but easily speared .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 12; Dorsal soft rays (total): 11 - 14; Anal spines: 3; Anal soft rays: 11 - 13. : short and / or deep.
🌀 Behaviour
Behavioural data for Cape knifejaw is currently being reviewed.
🦐 Diet
Diet information for Cape knifejaw is currently being compiled.
🥚 Reproduction
Reproduction data for Cape knifejaw is currently being compiled.
🌍 Habitat & Distribution
Marine; reef-associated; depth range ? - 150 m. Subtropical; 28°S - South Africa.
🌿 Ecology
benthic invertebrates and algae (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Oplegnathus Conwayi is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 19.3 g |
| Omega-3 (total) | 148 mg |
🔬 Mercury Safety
Mercury data for Cape knifejaw has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔍 Similar Species
👥 Community & Contribute
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