hardhead SUBST americ
- hardhead
- réaliste mf
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Northern species tend to be migratory; southern species do not migrate though the hardhead travels long distances on an irregular basis in response to rainfall.
en.wikipedia.org Hardhead are also harvested for industrial purposes in commercial bottom trawling operations.
en.wikipedia.org After examining the epidermis of the hardhead catfish, it appeared that the alarm substance cells were similar to those of freshwater catfish.
en.wikipedia.org Many fish have been associated with sound production for alarm, territorial, and courtship purposes, but sound probing of surroundings seems to be only be seen in hardhead catfish.
en.wikipedia.org Younger hardhead catfish tend to eat small crustaceans, like amphipods, shrimp, blue crabs, mollusks, and annelids.
en.wikipedia.org