Species: Poecilia koperi, Olomina, Olomina Molly
male: C longitudinal spots

Venezuela
Poecilia koperi Poeser, 2003
Olomina, Olomina Molly
Head stout, body relatively deep, moderately compressed at rear; head depressed; front nostril not tubular; covering of eye not continuous with skin of head; mouth small, at front, slightly oblique, lower jaw slightly projecting, top jaw protractile; jaw teeth consist of an outer row of large backward curved teeth with expanded tips, and several rows of small pointed teeth, inner row 1-pointed; 1 dorsal fin with short base, at rear of body, 8 (rarely 7) rays, fin long, reaches tail base; pelvic origin well behind pectoral base, near anal fin; tip of pelvic fin of males swollen, elongate; pectorals high on flank, 14 or more rays, 5th ray not scalloped in male; anal fin 8 (rarely 9) rays, origin under (female) or a little behind (male) dorsal fin origin; 3rd anal ray unbranched; anal fin modified in male to form an elongate sex organ, that organ short & with a straight tip that has small spines (not visible externally) and a long fleshy palp; tail base relatively narrow; tail fin rounded, without elongate sword; scales smooth and relatively large; 25-26 lateral scales, 16 around tail base.
Maracaibo area: Male - body scales with dark edges; ~10 dark bars on rear of body and tail base; tail fin base covered with irregularly pigmented scales; tail fin with longitudinal spots; dorsal fin with a large dark blotch on basal ½ of fin, dark spots outside that. Female - body colored like male, but with body bars less evident; fins without spots. East of Paraguana Peninsula; body with 2-3 horizontal rows of spots, less conspicuous below; tail fin with spots on membranes, dorsal fin spotted on membranes.
Reaches 10 cm?
Fresh and brackish coastal waters.
Depth range: 0-1 m.
Venezuela.

High Resolution Map Download
- Salinity
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- Brackish
- Freshwater
- Non Marine
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom
- Habitat
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- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Estuary
- Freshwater
- FishBase Habitat
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- Demersal
- Feeding Group
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- Data
- Detritivore
- Omnivore
- Diet
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- Data
- Benthic microalgae
- Detritus
- Insects
- Egg Type
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- Data
- Live birth
- No pelagic larva
- No pelagic phase
- Global Endemism
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- All species
- Greater Caribbean endemic
- West Atlantic Endemic
- Regional Endemism
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- Caribbean endemic
- Continent
- Continent only
- GC endemic
- All species
- Residency
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- Resident
- Climate Zone
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- Equatorial (0-10N, Costa Rica / Venezuela)
- IUCN Red List
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- Least concern
- Listed
- CITES
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- Not listed
- Length Max
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- 10
- Depth Range Min
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- 0
- Depth Range Max
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- 1