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Species: Tigrigobius janssi, Spot-back goby

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head: brown bars & spots
body: ~ 6 internal dark bars
back - ~ 3 rows dark spots

Tigrigobius janssi Bussing, 1981

Spot-back goby

Elongate; head rounded; upper lip connected to snout at front; a pore midway between front of the two eyes; 2 pores on preopercle; no teeth on roof of mouth; tongue with blunt tip; dorsal VII + I, 9 (8-10); anal rays I, 8 (7-9); pectoral rays 18; pelvic fins fused in a disc; tail rounded; scales absent except for 2 small rough scales on tail-fin base.

Head yellowish with brown bar below eye, also brown bands and spots on cheek and opercle; body translucent pale yellow to whitish with several longitudinal rows of small brown spots on upper half; body with 6-7 internal, wavy brown bars.

Size: to 3 cm.

Inhabits reefs and rock outcrops surrounded by sand.

Depth: 5-20 m.

Southern Mexico to Panama.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom only
  • Bottom
Habitat
  • Rocks
  • Reef only
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef (rock/coral/oyster)
FishBase Habitat
  • Reef Associated
Feeding Group
  • No Data
  • Carnivore
Diet
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
Egg Type
  • Benthic
  • No data
  • Pelagic larva
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
  • All species
Regional Endemism
  • All species
  • Continent only
  • TEP endemic
  • Mexican + Panamic provinces endemic
  • Continent
  • Continental TEP endemic
Residency
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Least concern
  • Listed
CITES
  • Not listed
Length Max
  • 3
Depth Range Min
  • 5
Depth Range Max
  • 20