Species: Awaous flavus, Red-fin river goby, Redfin river goby
bar under D1 origin - straight
Awaous flavus (Valenciennes, 1837)
Red-fin river goby
Head broad, depressed; snout blunt; head and body flattened on bottom; eyes small, close together, a pair of pores above front margin; pores in two series of 5 anterior and 2 posterior on a discontinuous canal behind eye; mouth a little under snout; jaw teeth slender, long, none on front of roof of mouth; 2-3 elongate papillae on shoulder girdle under gill cover; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VI + I, (8-11); length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin 10 (9-11); pectoral fin 16 (15-17); pelvic fins fused into a disk; tail fin rounded; scales on entire body, rough; scales in lateral series 57-58 (51-60); scales before dorsal fin 20 (17-25); no lateral line.
Color: pale grey brown; 6-8 distinct narrow dark vertical bars on body from behind pectoral fin base to tail base, the bar under the origin of the 1st dorsal straight; first dorsal fin red to reddish orange, especially prominent in males.
Reaches: 11 cm.
Depth range: 0.3-5 m.
Habitat: Usually reported from estuaries and river deltas over sand and mud bottoms, seldom in water of much flow and has never been reported in freshwater above tidal influence.
E Venezuela to Brazil.
High Resolution Map Download
- Salinity
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- Brackish
- Freshwater
- Non Marine
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom
- Habitat
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- Mud
- Freshwater
- Soft bottom only
- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Estuary
- FishBase Habitat
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- Demersal
- Feeding Group
-
- Data
- Omnivore
- Diet
-
- Data
- Benthic microalgae
- Mobile benthic worms
- Mobile benthic crustacea (shrimps/crabs)
- Insects
- Egg Type
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- Pelagic larva
- Data
- Benthic
- Global Endemism
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- Greater Caribbean non-endemic
- West Atlantic Endemic
- All species.
- Regional Endemism
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- Continent
- GC non-endemic
- Extends South of GC
- Also in Brazil
- Continent only
- All species..
- Residency
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- Resident
- Climate Zone
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- Equatorial (0-10N, Costa Rica / Venezuela)
- IUCN Red List
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- Listed
- Least concern
- CITES
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- Not listed
- Depth Range Min
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- 0
- Depth Range Max
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- 5
- Length Max
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- 11
