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Species: Chaenopsis deltarrhis, Delta pike-blenny

All Families:   All Genera:   All Species:

snout short, wide
notch on nape
D: 28-30, large sail in male, ocellus in female
dark stripe + dark bars
center roof mouth no teeth
tongue short
pectoral: 14

Chaenopsis deltarrhis Böhlke, 1957

Delta pike-blenny

Body very elongate; head long; no cirri on head; snout short and wide; large fish with a notch separating head and flattened nape; long mouth, usually reaching far behind eye, tip of lower jaw projecting; tongue short; no teeth at front of roof of mouth; dorsal fin XVIII-XX, 28-30, front half of fin very tall and sail-like in adult males; anal rays II, 32-36; pectoral rays 14; tail fin rounded, joined to dorsal and anal fins.

Light green or olive, white below, often with greenish midlateral stripe and/or with series of 8-10 dark bars; female with a black ocellated spot behind 4th dorsal spine near outer edge of fin; male without spot or ocellus on front of dorsal fin.

Size: attains 7.5 cm.

Inhabits worm tubes on sand-rubble bottoms.

Depth: 5-30 m.

Costa Rica to Colombia, Cocos Island.


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Salinity
  • Marine
  • Marine Only
Inshore/Offshore
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
Habitat
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Barnacles & worm tubes
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Planktivore
Diet
  • Bony fishes
  • Data
  • Pelagic fish eggs
  • Mobile benthic crustacea (shrimps/crabs)
  • Zooplankton
Egg Type
  • Benthic
  • Pelagic larva
  • No data
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • Continent only
  • All species
  • Continent + Island (s)
  • Panamic province endemic
  • Island (s)
  • TEP endemic
Residency
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Listed
  • Data deficient
CITES
  • Not listed
Length Max
  • 7.5
Depth Range Min
  • 5
Depth Range Max
  • 30