Species: Microdesmus knappi, Fat-lipped worm-goby
pectoral 11
Microdesmus knappi Dawson, 1972
Fat-lipped worm-goby
Slender, wormlike, body height 4-8% of SL; tail (without fin) < 50% of SL; head deep; eyes tiny, high on side of head, skin covered; snout square and blunt; lips prominent, swollen, with folds that join at rear of mouth to form a long flap; teeth in 1-3 rows; gill opening large (not tubular), but shorter than base of pectoral; dorsal fin spines evenly spaced, XVI-XVIII, 28-30, origin over pectoral; anal II, 21-23; pectoral 11 rays; pelvics I, 3, shorter than pectorals; tail fin rounded; dorsal and anal fins confluent with tail fin; scales small, non-overlapping, 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.
High Resolution Map Download
- Salinity
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- Marine Only
- Marine
- Inshore/Offshore
-
- Inshore Only
- Inshore
- Water Column Position
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- Bottom only
- Bottom
- Habitat
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- Rocks
- Reef only
- Reef associated (reef + edges-water column & soft bottom)
- Reef (rock/coral/oyster)
- FishBase Habitat
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- Demersal
- Feeding Group
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- No Data
- Carnivore
- Diet
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- No Data
- Mobile benthic worms
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- No data
- Benthic
- Pelagic larva
- Global Endemism
-
- All species
- East Pacific endemic
- Tropical Eastern Pacific (TEP) endemic
- Regional Endemism
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- Panamic province endemic
- Continental TEP endemic
- Continent
- Continent only
- TEP endemic
- All species
- Residency
-
- Resident
- Climate Zone
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- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- IUCN Red List
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- Listed
- Data deficient
- CITES
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- Not listed
- Length Max
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- 7
- Depth Range Min
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- 0
- Depth Range Max
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- 2
