Species: Prionotus birostratus, Two-beaked searobin
snout plates long
Prionotus birostratus Richardson, 1844
Two-beaked searobin
Head flattened, snout plates strongly projecting at front; wide between eyes; no transverse groove across top of head behind eyes; bony ridge under eye with 2 spines at rear; teeth on jaws and roof of mouth simple; ~ 5-6 well developed lower gill rakers; two separate dorsal fins, X + 10-12; pectoral fins long, reaching past center of anal base, 13-14 rays, with 2-3 enlarged, but relatively short, free rays at bottom of fin, rear margin of main pectoral concave; body with rough scales; rear flap of operculum with scales; nape scaled; lateral-line scales 50-55.
Head and upper body grey-brown, a row of red-brown spots along center of flank; 1st dorsal pale, with an irregular blackish bar from the tips of the front spines down to the center of the fin base; second dorsal pale, dusky outer margin and rear part of fin; tail with 3 dark bars formed by vertical rows of blackish spots; anal clear; pectoral black with a whitish base and a whitish bar across its center.
Size: 18 cm.
Habitat: sand-mud bottoms.
Depth: 20-60 m.
Southern Baja and the Central Gulf of California to Ecuador.
High Resolution Map Download
- Salinity
-
- Marine Only
- Marine
- Inshore/Offshore
-
- Inshore Only
- Inshore
- Water Column Position
-
- Bottom only
- Bottom
- Habitat
-
- Mud
- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Soft bottom only
- FishBase Habitat
-
- Demersal
- Feeding Group
-
- No Data
- Carnivore
- Diet
-
- Bony fishes
- Pelagic crustacea
- Zooplankton
- Data
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- Pelagic
- Pelagic larva
- No data
- Global Endemism
-
- East Pacific endemic
- All species
- Tropical Eastern Pacific (TEP) endemic
- Regional Endemism
-
- Continental TEP endemic
- TEP endemic
- All species
- Continent only
- 3 provinces (Cortez + Mexican + Panamic) endemic
- Continent
- Residency
-
- Resident
- Climate Zone
-
- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- Northern Subtropical (Cortez Province + Sinaloan Gap)
- Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
- IUCN Red List
-
- Least concern
- Listed
- CITES
-
- Not listed
- Length Max
-
- 18
- Depth Range Min
-
- 20
- Depth Range Max
-
- 60
