🐠 Black Longfin Grouper (Epinephelus longispinis)
Marine Grouper • Reef Predator • Display Species • Indian Ocean Native
 
📋 The Black Longfin Grouper (Epinephelus longispinis) is a sleek, dark-bodied grouper recognized for its elongated dorsal and anal fins, giving it an elegant, flowing appearance. Its body coloration ranges from charcoal to jet black, sometimes displaying faint patterning or spotting under strong light.
Found throughout the Indian Ocean and Red Sea, it inhabits rocky reefs and coral slopes where it ambushes prey with precision. In captivity, it demonstrates bold personality, quickly adapting to feeding routines and showing off its graceful swimming style.
This species thrives in large predator aquariums with stable water quality, robust filtration, and tankmates of similar size and temperament. Though unsuitable for reef tanks, it is a spectacular display predator for advanced marine hobbyists.
 
💡 Highlights
✨ Elegant silhouette: long fins and sleek black coloration
⚪ Bold behavior: confident and responsive to feeding
📏 Compact grouper: reaches 35 cm (14") – manageable for large home aquariums
✅ Adaptable predator: hardy and easy to wean onto frozen foods
🐠 Indian Ocean native: stunning deepwater rockcod species