Mainly in waters of moderate to high current velocity between 525 and 695 m elevation, also abundant in a pool with much vegetation and little current. More abundant in waters of greater current velocity. Always swims near a grass or undergrowth refuge over muddy or sand bottoms. Eats aquatic insects . Not a seasonal killifish. Is difficult to maintain in aquarium .
Physical description for Cynodonichthys Fuscolineatus is currently being compiled.
Behavioural data for Cynodonichthys Fuscolineatus is currently being reviewed.
Freshwater; benthopelagic; non-migratory. Tropical; 20°C - 26°C Central America: Atlantic river basins of Costa Rica.
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