Species: Pycnomma semisquamatum, Secret goby
body ~ 6 dark bars
belly - 2 cream bars
Pycnomma semisquamatum Rutter, 1904
Secret goby
Body elongate, compressed; head depressed, narrow between eyes; front and rear nostrils tubular, rear shorter than front; no barbels on head; side of head with 3 pores (none on preopercle), pores without fleshy flaps at rear margins; mouth terminal, oblique; first dorsal fin with VII spines + I, 10-11; anal rays I, 9-10; pelvic fins completely separate; tail fin oval, longer than head; scales rough, large, none on head; tail fin base with 4 large, very rough scales.
Mottled brownish; side of body with about 4-5 diffuse blackish, hourglass-shaped bars and black bar at base of tail fin; a pair of creamy-yellow bars below spinous dorsal fin; head with white spots and diagonal brown bars radiating from eye; a small black spot at bottom of gill cover; median fins with white spots on rays and white margin on both dorsal fins.
Size: reaches 6.3 cm.
Inhabits crevices and ledges of weed-covered rocky reefs.
Depth: 2-20 m.
The Central Gulf of California.
High Resolution Map Download
- Salinity
-
- Marine Only
- Marine
- Inshore/Offshore
-
- Inshore Only
- Inshore
- Water Column Position
-
- Bottom
- Bottom only
- Habitat
-
- Reef (rock/coral/oyster)
- Reef only
- Reef associated (reef + edges-water column & soft bottom)
- Rocks
- FishBase Habitat
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- Reef Associated
- Feeding Group
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- Carnivore
- No Data
- Diet
-
- Mobile benthic worms
- Mobile benthic crustacea (shrimps/crabs)
- Mobile benthic gastropods/bivalves
- No Data
- Egg Type
-
- Pelagic larva
- Benthic
- No data
- Global Endemism
-
- All species
- Tropical Eastern Pacific (TEP) endemic
- East Pacific endemic
- Regional Endemism
-
- Cortez province endemic
- Continent only
- Continental TEP endemic
- TEP endemic
- All species
- Continent
- Residency
-
- Resident
- Climate Zone
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- Northern Subtropical (Cortez Province + Sinaloan Gap)
- IUCN Red List
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- Data deficient
- Listed
- CITES
-
- Not listed
- Length Max
-
- 6.3
- Depth Range Min
-
- 2
- Depth Range Max
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- 20
