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Microdesmus knappi C. E. Dawson, 1972
FAT-LIPPED WORM-GOBY
Life   Vertebrata   Fish   Microdesmidae   Microdesmus

Microdesmus knappi
© Copyright Ross Robertson, 2006 · 12
Microdesmus knappi

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Microdesmus knappi
© Copyright Photographer/SFTEP, 2002 · 0
Microdesmus knappi
espaņol

Overview
Main identification features
  • eyes tiny, high
  • dense dark dots - upper body and head
  • lips - fleshy, large flaps
Slender, wormlike, body height 4-8% of standard length; body and head longer than tail (with fin); 27-28 trunk vertebrae, 20-21 tail vertebrae; eyes tiny, skin-covered, high on side of head; snout square and blunt; lips prominent, swollen, with folds that join at rear of mouth to form a long flap; gill opening not tubular, but less than pectoral base; teeth in 1 row, curved, chisel-like; dorsal and anal fins confluent with tail fin; dorsal XVI-XVIII evenly spaced spines, 28-30 rays, 44-48 elements in total, origin over pectoral ; anal 23-25 elements; pectoral 11 rays; pelvic I spine, 3 rays; tail fin rounded; scales well separated; most of head, chest, and all of belly scaleless, a few on cheek and nape; fins scaleless except for 2-3 rows on base of tail.

Reddish-brown to pink; upper body and head with a dense scattering of dark brown dots, which disperse and disappear below, dots larger on opercle; lips pale with dark spot at tip of lower jaw; dorsal fin pale with few dots on rays; tail base densely dotted, rays with dark streaks, outer margin pale; other fins clear

Size: 7 cm.

Habitat: holes in intertidal beachrock.

Depth: 0-2 m.

Colombia.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 2 m.
Depth Range Min: 0 m.
Diet: mobile benthic crustacea (shrimps/crabs); mobile benthic worms.
Eastern Pacific Range: Northern limit=5; Southern limit=2; Western limit=-79; Eastern limit=-78; Latitudinal range=3; Longitudinal range=1.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Rocks; Reef (rock &/or coral); Reef only; Reef associated (reef + edges-water column & soft bottom).
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 7 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • Dawson, C.E., 1972., A new eastern Pacific wormfish, Microdesmus knappi (Pisces: Microdesmidae)., Proc. Biol. Soc. Wash., 85(15):191-204.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
  • Thacker, C., 2000., Phylogeny of the wormfishes (Teleostei: Gobioidei: Microdesmidae)., Copeia, 2000:940-957.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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http://192.134.151.83/Summary/speciesSummary.php?genusname=Microdesmus&speciesname=knappi ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Microdesmus&speciesname=knappi
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