Species: Bathygobius lineatus, Southern frillfin
Bathygobius lineatus (Jenyns, 1842)
Southern frillfin
Body robust; head broad, depressed; snout bluntly rounded; eyes large, close together; mouth moderate sized, relatively horizontal; tongue with distinct notch in front; jaw teeth in bands, without canines; dorsal fins VI + I, 9 rays; anal I, 8 rays; pelvic disc elipticalm sometimes reaching to anus, its front membrane with small side lobes; tail round, 25-32 rays; pectoral rays 19-21, the uppermost 5 rays forming free filaments, 1st to 4th branch only once; scales large, rough, 30-37 on mid side, predorsal scales not reaching eyes, rest of head scaleless (B. l. arundelii sometimes with scales on opercle).
Light brown with several diffuse brown saddles across back; a clearly defined midlateral longitudinal row of alternating dark brown and white blotches; lower portion of head dark brown with scattered white spots; 1st dorsal fin with a clear outer edge and dark inner stripes, innermost ones darkest at rear; last of three dark blotches behind eye is much larger than 1st.
Size: to about 12 cm.
Inhabits rocky shores, common in tide pools.
Depth: 0-2 m.
An island species found at Clipperton, the Galapagos Islands, Gorgona Is and Lobos de Afuera in northern Peru.
Note: Miller et al 2001 recognized a different subspecies at each of these three localities (but did not examine specimens from Gorgona) -B. lineatus arundelii, B. l. lineatus and B. l. lupinus, respectively.
High Resolution Map Download
- Salinity
-
- Marine Only
- Marine
- Inshore/Offshore
-
- Inshore Only
- Inshore
- Water Column Position
-
- Bottom only
- Bottom
- Habitat
-
- Reef (rock/coral/oyster)
- Rocks
- Reef only
- Reef associated (reef + edges-water column & soft bottom)
- FishBase Habitat
-
- Demersal
- Feeding Group
-
- Carnivore
- No Data
- Diet
-
- Mobile benthic worms
- Mobile benthic gastropods/bivalves
- No Data
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- Benthic
- Pelagic larva
- No data
- Global Endemism
-
- Tropical Eastern Pacific (TEP) endemic
- East Pacific endemic
- All species
- Regional Endemism
-
- Multiple oceanic islands endemic
- TEP oceanic island (s) endemic
- TEP endemic
- All species
- Island (s)
- Island (s) only
- Residency
-
- Resident
- Climate Zone
-
- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- South Temperate (Peruvian Province )
- IUCN Red List
-
- Vulnerable
- Listed
- CITES
-
- Not listed
- Length Max
-
- 12
- Depth Range Min
-
- 0
- Depth Range Max
-
- 2
