What's the difference between ichthyologic and ichthyological?

Ichthyologic

Definition:

• (a.) Alt. of Ichthyological

Example Sentences:

• (1) In the course of ichthyological inventory investigations in the main water-course of the Narew River the occurrence of Tracheliastes polycolpus Nordm.

Ichthyological

Definition:

• (a.) Of or pertaining to ichthyology.

Example Sentences:

• (1) In the course of ichthyological inventory investigations in the main water-course of the Narew River the occurrence of Tracheliastes polycolpus Nordm.