Ichthyophis elongatus was created in 1965.
Cancelloxus elongatus was created in 1986.
Omobranchus elongatus was created in 1855.
Zoarces elongatus was created in 1868.
Radiicephalus elongatus was created in 1917.
Petrolisthes elongatus was created in 1837.
Ichthyophis javanicus was created in 1960.
Ichthyophis monochrous was created in 1858.
Ichthyophis bernisi was created in 1975.
Ichthyophis garoensis was created in 1999.
Ichthyophis orthoplicatus was created in 1965.
Ichthyophis singaporensis was created in 1960.
Ichthyophis husaini was created in 1999.