A resident intertidal species with homing behavior (Ref. 32612). Mainly found in saltwater marshes and in tidal creeks. May leave tide pools if aquatic conditions become inhospitable (Ref. 31184). Enters fresh water to limited extent (Ref. 7251). Not a seasonal killifish. Breathes air when out of water (Ref. 31184). Difficult to maintain in aquariums (Ref. 27139). Its introduction has caused the decline of native species and near extinction of Aphanius baeticus in southwestern Spain (Ref. 59043).

Western Atlantic: Canada (Ref. 5951) to Sandy Hook, New Jersey to northeastern Florida, and in lower Chesapeake and Delaware bays (Ref. 35624). Introduced to southern Portugal and southern Spain (Ref. 59043).

15.0 cm TL (male/unsexed; (Ref. 27139))

benthopelagic; non-migratory; freshwater; brackish; marine

A resident intertidal species with homing behavior (Ref. 32612). Mainly found in saltwater marshes and in tidal creeks. May leave tide pools if aquatic conditions become inhospitable (Ref. 31184). Enters fresh water to limited extent (Ref. 7251). Omnivorous feeder, food includes small crustaceans, polychaetes, insect larvae and vegetable matter. Preyed upon by kingfishers, small mammals, brook trout and bullfrogs.

Deposits eggs in the shells of Modiolus demissus.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 2
Species With Barcodes: 1

Not Evaluated

fisheries: ; aquarium: commercial