Hasselt's goby
📖 Overview
Hasselt's goby (Callogobius hasseltii) is a ray-finned fish of the family Gobiidae. It inhabits diadromous, migrating between freshwater and the sea waters in reef-associated environments. This species can reach a maximum total length of 7.3 cm. It occurs at depths between 1 and 15 metres. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List. Commercially fished and consumed as food.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 7; Dorsal soft rays (total): 10; Anal spines: 1; Anal soft rays: 8. Characterized by mottled brown with dark stripe from snout, through eye to upper opercle; dark brown bars of variable width at level of nape, posterior part of first dorsal fin, anterior part of second dorsal fin, posterior half of second dorsal fin and across caudal peduncle; upper edge of caudal fin with intense black spot; completely united pelvic fins with well-developed frenum; pointed caudal fin; longitudinal scale series 40-45; cycloid scales on nape, cheek, opercle, base of pectoral fin, breast and belly, posterior scales ctenoid; predorsal scales 20-22; head with prominent papillae ridge; depth of body 5.4-6.0 in SL .: elongated.
🌀 Behaviour
Behavioural data for Hasselt's goby is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; freshwater; brackish; reef-associated; amphidromous ; depth range 1 - 15 m . Tropical; 28°N - 35°S West Pacific.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Hasselt's goby 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 | 18.1 g |
| Omega-3 (total) | 98 mg |
🔬 Mercury Safety
Mercury data for Hasselt's goby 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)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Hasselt's Flap-headed Goby · Hasselt's Goby · Van Hasselt's Goby |
| 🇯🇵Japanese | Okinawahaze · オキナワハゼ |
| 🌍TGL | Bia |
| 🇨🇳Chinese | 哈氏硬皮鰕虎 · 長鰭美鰕虎魚 · 长鳍美鰕虎鱼 |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .
👥 Community & Contribute
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