Blackfin dartfish
| Scientific name | Pterelrotris evides |
| English name | Blackfin dartfish |
| Japanese name | 黒百合鯊 |
| Class | Actinopterygii |
| Order | Perciformes |
| Family | Ptereleotridae |
| Genus | Pterelrotris |
| Species | evides |
| Subspecies | --- |
| Full length | ~10cm. |
| Distribution | Indo-Pacific. South of Chiba Prefecture. |
Characteristics
The back half of the adult fish's body is black. They swim with their dorsal and anal fins spread out. The head is a bright yellow or light blue color. Total length is about 10 cm.
When they are juvenile, their body is transparent and the black of their dorsal fin is also pale.
Ecology
They live on reefs and coral reefs. They sometimes hover in the middle layer without touching the seabed.
Habitat
Miura Peninsula, Arasaki
I photographed a school of juvenile fish swimming in the middle layer of the rocks at Arasaki. There were about 10 of them floating between the surface and the reefs. Since it was still a juvenile, its color was pale, but its dorsal and anal fins were fully extended.
Pictures
Introducing a picture of Blackfin dartfish.
