Shorefishes of the Eastern Pacific online information system

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Species: Pherallodiscus varius, Dimorphic clingfish, Southern fraildisc clingfish

All Families:   All Genera:   All Species:

back & fin rays tan
C 7-9
sucker papillae: 2 rear rows
pectoral rays spotted

Pherallodiscus varius Briggs, 1955

Southern fraildisc clingfish, Dimorphic clingfish

Body broad, slightly depressed; head moderately slender, depressed , snout shallow and flat; top lip broad, wider at front than sides; rear nostril over front edge of eye, front nostril with conspicuous 2-lobed flap; top jaw with a patch of conical teeth, followed by a row of canines behind; 5-6 pairs of round-tipped incisors at front of lower jaw, with patch of small conical teeth behind, followed by row of slightly curved canines; small papillae on lower jaw and extremities of mouth; anus closer to anal origin than sucker;  sucker disc large (24-43% of SL), without papillae at front and center, 2 rows of papillae across rear; pectoral 16-18 rays, in male lower 4 rays swollen; a small round fleshy swelling at pectoral base;dorsal 9-10 rays; anal 6-7 rays; tail 7-9 rays.

(Preserved fish) Head and body, and fin rays light brown; small dark spots along pectoral rays.

Size: 2.3 cm.

Habitat: rocky bottoms.

Depth: 0-5 m?

Central  Mexico.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Reef (rock/coral/oyster)
  • Reef only
  • Rocks
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • No Data
  • Carnivore
  • No Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Pelagic larva
  • No data
  • Benthic
Global Endemism
  • East Pacific endemic
  • All species
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • Mexican province endemic
  • TEP endemic
  • Continent only
  • Continent
  • Continental TEP endemic
  • All species
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Listed
  • Data deficient
  • Not listed
Depth Range Max
  • 5
Depth Range Min
  • 0
Length Max
  • 2.3