Range and Identity
Diapterus rhombeus occurs from the southern Gulf of Mexico through Central American and Antillean waters toward Brazil. The scientific identity should accompany records called mojarra, because that common name covers multiple fishes. A market or local name alone may not resolve the species.
Habitat and Behavior
Mangrove-lined lagoons are common habitat, along with shallow marine sand and mud. Juveniles are recorded from both brackish water and unusually saline lagoons. These observations show tolerance across settings, not a requirement for every individual to experience the same salinity sequence.
Food and Life History
The maximum reference is 42.3 centimeters total length. Small bottom invertebrates are suggested as food in the summary, but that tentative description is not converted into a quantified diet. A small published sample mass is not used as a secure species maximum.
Field Note
Retain measured salinity when available. The same lagoon label can describe very different water conditions and does not by itself explain which setting a juvenile occupied.
All Lakes With Rhomboid Mojarra
Browse all lakes and reservoirs with confirmed Rhomboid Mojarra records in our database, listed alphabetically.
No published lakes are currently linked to this species in our confirmed records.