Striped Eel Catfish
Plotosus lineatus
Characteristics
Scientific name
Size
Depth range
Nutrition
Behave
Frequency in Cyprus
Protection status
Native/Immigrant
Plotosus lineatus
Usually 10 to 25 cm, occasionally reaching up to 32 cm.
0 to 80 metres
Carnivorous; crustaceans, molluscs, marine worms, and small fish.
Juveniles form dense schools, while adults are usually solitary or occur in small groups, foraging along the seabed for food.
Currently uncommon and restricted to a few locations, though the species appears to be expanding its range.
Not threatened (IUCN: Least Concern)
Lessepsian migrant from the Red Sea via the Suez Canal.
The Striped Eel Catfish (Plotosus lineatus) is a distinctive fish with a dark body marked by pale longitudinal stripes. Its eel-like shape and the dense schools formed by juveniles make it easy to identify. Native to the Indo-Pacific region, the species was first recorded in Cypriot waters in 2022. Sightings remain uncommon, but it may become more frequently encountered as its Mediterranean population continues to expand.
Where to Find in Cyprus: Dive Sites & Habitat
Plotosus lineatus was first recorded in Cypriot waters in 2022 and is one of the more recent arrivals to the eastern Mediterranean. The species inhabits sandy and muddy seabeds, seagrass meadows, lagoons, sheltered bays, and protected coastal areas. In the Mediterranean, it has been recorded from shallow coastal habitats down to depths of approximately 80 metres.
Sightings in Cyprus are still relatively uncommon, meaning encounters cannot yet be guaranteed on any particular dive. However, observations appear to be increasing as the species continues to expand its range around the island.
The highest chance of encountering the Striped Eel Catfish is in shallow coastal areas with sandy bottoms and seagrass beds, particularly along the south and east coasts of Cyprus, where many Lessepsian migrants are first observed.
Based on current observations, the species may become increasingly common at additional dive sites around Cyprus in the coming years. At Green Bay, divers from the Cyprus Diving Centre have already reported noticeably more frequent sightings in recent seasons, suggesting that a local population may now be becoming established.
Behavior & Key Features Underwater
Juveniles often form spectacular, ball-shaped schools that may consist of dozens or even hundreds of fish. These schools move in perfect synchrony across the seabed, creating an impressive sight for divers. Adults are usually solitary or occur in small groups, using their barbels to search the sand for crustaceans, worms, molluscs, and other prey.
The Striped Eel Catfish possesses sturdy fin spines in its dorsal and pectoral fins, which serve as a defence mechanism against predators. However, divers are unlikely to encounter any problems, as these fish are generally shy and will move away when approached. As with all marine life, they should be observed without touching or disturbing them. This species is considered an invasive newcomer to the Mediterranean and is being closely monitored by scientists due to its potential impact on local marine ecosystems.
Frequently asked Questions (FAQ)
Is the Striped Eel Catfish dangerous to divers?
No. These fish are generally shy and normally avoid contact with people. As with all marine life, the best approach is to observe and not touch.
Why are Striped Eel Catfish often seen in large groups?
Juveniles form dense schools that provide protection from predators, making them particularly noticeable to divers.
Is the Striped Eel Catfish native to Cyprus?
No. The species is native to the Indo-Pacific region and entered the Mediterranean through the Suez Canal.
Written by
Daniel "KID"