Sicydium

Distribution:
Western Atlantic - Costa Rica.

Habitat:
freshwater, brackish, marine.


altum

Distribution:
Costa Rica.

Habitat:
freshwater, brackish, marine.


crenilabrum

Distribution:
West-central Africa [amphidromous].

Habitat:
freshwater, brackish, marine.


plumieri

Distribution:
Caribbean islands: Puerto Rico, Barbados, Cuba, Jamaica, Martinique, Guadeloupe and Saint Vincent; Central America: Honduras, Panama.

Habitat:
freshwater, brackish, marine


punctatum

Distribution:
South America and Caribbean islands: Dominica, Jamaica, Martinique, Puerto Rico, Trinidad and Tobago and Venezuela, Brazil; Central America: Honduras [amphidromous].

Habitat:
freshwater, brackish, marine.