Species: Opsanus tau, Oyster toadfish

belly - dark reticulations

Opsanus tau (Linnaeus, 1766)
Oyster toadfish
Head and front of body moderately depressed; head wide (24.6-36.6% of SL), with many barbells, especially around lower jaw; 2 solid spines on upper opercle and 1 below those; teeth molar-like to pointed, but no canines; gill openings restricted to side, before pectoral fin base; dorsal fin with 3 solid spines, spiny and soft parts joined, soft part 26 (25-26) rays; anal fin 19-22 rays; dorsal and anal fins not joined to tail fin; pectoral rays usually 20-21, discrete glands between upper pectoral rays on inner surface of fin; a pore opening to surface at rear of base of pectoral fin; 2 lateral lines, no light organs; body without scales.
Pale grey brown; inside mouth not dark; dark under eye, an oblique dark stripe from eye to lower corner of operculum, a dark stripe back from eye to top corner of operculum; sides and belly with blackish reticulations, or finely mottled, no round light spots; dorsal, anal, tail and pectoral fins with distinct light bars, those continuous and not formed by rows of light spots.
Reaches 47.4 cm.
Inshore on rocky bottoms; marine to brackish water.
Depth range: 0.5-5 m.
Maine to Florida.

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- Salinity
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- Marine
- Brackish
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom
- Habitat
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- Estuary
- Reef only
- Rocks
- Reef (rock/coral/oyster)
- Reef associated (reef + edges-water column & soft bottom)
- FishBase Habitat
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- Reef Associated
- Feeding Group
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- Carnivore
- Data
- Diet
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- Mobile benthic gastropods/bivalves
- Bony fishes
- Mobile benthic worms
- Data
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- Data
- Benthic
- No pelagic larva
- No pelagic phase
- Global Endemism
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- Greater Caribbean non-endemic
- West Atlantic Endemic
- All species.
- Regional Endemism
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- Continent only
- All species..
- Extends North of GC
- GC non-endemic
- Continent
- Residency
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- Resident
- Climate Zone
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- Subtropical (23-35N, Florida / Carolinas / Bermuda)
- Temperate (>35N)
- IUCN Red List
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- Least concern
- Listed
- CITES
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- Not listed
- Length Max
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- 47.4
- Depth Range Min
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- 0
- Depth Range Max
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- 5