Okinawan whip-fin ponyfish
📖 Overview
Okinawan whip-fin ponyfish (Equulites ryukyuensis) is a ray-finned fish of the family Leiognathidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 9.6 cm. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. Commercially fished and consumed as food.
🔬 Taxonomy
🐟 Physical Description
This species is distinguished by the following set of characters: body depth 35-45% SL, 126-167% HL; posterior margin of adipose eyelid not incised (similar to E. rivulatus); upper branch of postorbital canal is short, just reaching to or very slightly extending beyond posterior margin of preopercle (similar to E. berbis); anterior tip of scaly area on breast just reaching to vertical through junction of interopercle and subopercle at margin of operculum; interspace of pelvic keels naked; scale rows above and below lateral line 11-17 and 17-24, respectively (some of both 29-38); scale rows between lowest base of pectoral fin and pelvic-fin insertion 8-9; markings on anterior dorsolateral body comprised of short wavy lines or oblique lines; second anal-fin spine short, not extending beyond base of fifth soft ray .Cross section: compressed.
🌀 Behaviour
Behavioural data for Okinawan whip-fin ponyfish is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; demersal. Subtropical Northwest Pacific: Japan.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Equulites Ryukyuensis 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
Detailed nutritional data for Okinawan whip-fin ponyfish is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Okinawan whip-fin ponyfish has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
🔍 Similar Species
👥 Community & Contribute
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