Shorefishes of the Greater Caribbean online information system

Español  Contact

Species: Poecilia rivasi, Rivas’ Limia, Rivas’ Molly

All Families:   All Genera:   All Species:

D base: dark spot at rear
male: pelvic tips swollen, sex organ - with fleshy palp, no spines

Poecilia rivasi (Franz & Burgess, 1983)

Rivas’ Limia, Rivas’ Molly

Head and body moderately robust, moderately compressed at rear; head depressed; front nostril not tubular; covering of eye not continuous with skin of head; preoperculum with 7 pores, that do not form an open canal; mouth small, at front, slightly oblique, lower jaw slightly projecting, top jaw protractile; outer teeth strongly compressed, spatula-like; inner teeth 3-pointed; gill rakers 15-18; 1 dorsal fin with short base, at rear of body, 7 rays; anal fin origin distinctly before dorsal fin origin in male, under dorsal fin origin in female, 9 rays; pelvic origin well behind pectoral base, near anal fin; tip of pelvic fin of males swollen, elongate, tip of 2nd ray fleshy, cuved inward, tip of 3rd ray branched; pectorals high on flank, 5th ray not scalloped in male; 3rd anal ray unbranched; anal fin modified in male to form an elongate sex organ, tip of that organ straight, without spines but with an upward directed claw at its tip and with a fleshy palp; tail base relatively narrow; tail fin rounded; scales smooth and relatively large, 25-27 lateral scales.

A dark spot at the rear of the base of the dorsal fin.

Reaches 3.9 cm.

Mangrove swamps.

Depth: 0-1 m.

Known only from Haiti.

High Resolution Map Download

Species Data Create Report Export as Word File Export as Excel File
  • Brackish
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Estuary
  • Mangrove
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Detritivore
  • Data
  • Detritus
  • Insects
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Data
  • Live birth
  • No pelagic larva
  • No pelagic phase
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Antilles endemic
  • GC endemic
  • Island (s)
  • Island (s) only
  • All species
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 3.9
Depth Range Min
  • 0
Depth Range Max
  • 1