Shorefishes of the Eastern Pacific online information system

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Species: Bollmannia species A, Slender goby

All Families:   All Genera:   All Species:

D1: no dark spot, spines long
D2: I, 15; orange spots & margin
C: dark blotch on base + 2 orange stripes below
top lip: black line
A - 2 orange stripes

Bollmannia species A

Slender Goby

Head & body compressed; body relatively slender (greatest depth 17-22% of SL); head rounded, elongate (25-31% of SL); eye large, 6.7-9.2% of SL; mouth large, very oblique; teeth in several rows; dorsal fin VII (spines moderately filamentous, longest reaching middle of base of soft dorsal) + I, 14-16; anal I, 14-16; last rays of dorsal & anal reach base of tail fin; pectoral rays 24-26, just reaches origin of anal fin; pelvics fused to form disc, front margin of disc scalloped, not reaching anus; tail base slender (least depth 7.7-9.1% of SL); tail long (~ 50% of SL), strongly pointed; scales large (28-29 rows along body), rough; 9-10 scales before dorsal fin; 1-2 large, 1-2 small scales on upper opercle, several medium sized on upper preopercle, 1 large + several small on lower preopercle; 1 large + 4-5 medium sized scales on base of pectoral fin.

Body and head grey-brown, orangish above; a prominent black line on top lip; 1st dorsal fin without dark spot, spines orange; 2nd dorsal fin with two inner rows of orange spots and an outer orange stripe; tail fin with a large dark spot covering upper base, upper half of fin with orange spots, lower ½ with 2 orange stripes; pelvics blackish; anal fin with two orange stripes.

Size: reaches 13 cm.

Habitat: benthic on soft bottoms.

Depth: 15-150 m.

Malpelo and Panama to Ecuador.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom only
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • Planktivore
  • Carnivore
  • No Data
  • Mobile benthic worms
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • No data
  • Benthic
  • Pelagic larva
Global Endemism
  • East Pacific endemic
  • All species
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • All species
  • TEP endemic
  • Continent
  • Continent + Island (s)
  • Island (s)
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 13
Depth Range Min
  • 15
Depth Range Max
  • 150