ASPER, C., 1976. POPULATIONS OF SYMPATRIC SCULPINS, COTTUS ALEUT/CUS AND COTTUS ASPER, IN FOUR ADJACENT SALMON-PRODUCING COASTAL STREAMS ON VANCOUVER ISLAND, BC. Fishery Bulletin, 74(1).
| Species | Development state | Trait | Primary Data | Secondary Data |
| Cottus aleuticus | Egg | Degree-days for incubation | 10-12; 19-20 | 214.5 °C * day |
| Cottus aleuticus | Larvae | Initial larval size | 5 | 5.0 mm |
| Cottus aleuticus | Larvae | Larvae behaviour | Pelagic | Pelagic |