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adelum 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.