Shorefishes of the Eastern Pacific online information system

Español  Contact

Species: Awaous banana, River goby

All Families:   All Genera:   All Species:

bottom of head & body flattened
head broad, depressed
crecent bar under D1
oblique bar above pectoral base
pelvics in disc
2-3 papillae under gill cover

Awaous banana (Valenciennes, 1837)

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 a single series of 7 on canal behind eye-pores; 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, 10 (9-12),length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 10 (9-11); pectoral fin 16 (14-17),  pelvic fins fused into a disk; tail fin rounded; scales on entire body, those on body rough; scales in lateral series 67-73 (57-86); scales before dorsal fin 30 (26-40); no lateral line.

Background color brown dorsally, sides light yellowish tan, ventral surface white or pale yellow; sides of head with 3 black slanted bars; body with about 7 irregular black bars on upper side, the first extending from above the gill cover onto the pectoral fin, the bar under the origin of the 1st dorsal crescent-shaped, curving from in front of the dorsal fin to the ventral surface of the body; flank with 7-8 black blotches; back with a series of black irregular small spots, in front of and along first dorsal fin; dorsal fin yellowish; anal and pelvic fins pinkish; base of pectoral fin pinkish orange, the remainder yellowish, except for black bar on its front; tail fin with 7-8 black bars. Both sexes have similar colors. Juvenile with 3 dark diagonal bars on nape, 4 bars on lower body under 2nd dorsal fin and tail base.

Reaches: 37 cm.

Depth: 0.3-3 m.

Habitat: Inhabits clear streams and rivers over sand and gravel, but also found in turbid waters with muddy bottoms; occurs in low salinity mouths of streams. Feeds mainly on filamentous algae.

Atlantic and Pacific coasts of the Americas.


High Resolution Map Download

Species Data Create Report Export as Word File Export as Excel File
Salinity
  • Brackish
  • Freshwater
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
Habitat
  • Soft bottom only
  • Freshwater
  • Sand & gravel
  • Mud
  • Estuary
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Herbivore
Diet
  • Benthic microalgae
  • Data
Egg Type
  • Data
  • Benthic
  • Pelagic larva
Global Endemism
  • New world (East Pacific + West Atlantic)
  • TEP non-endemic
  • Transisthmian (East Pacific + Atlantic of Central America)
Regional Endemism
  • Continent
  • Tropical Eastern Pacific (TEP) non-endemic
  • Continent only
  • All species
Residency
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 37
Depth Range Min
  • 0
Depth Range Max
  • 3