DiscoverScience on Player FMFlathead catfish ( Pylodictis olivaris ) may look like they are perpetually smiling, but these five foot-long fish are no laughing matter in regions where they do not belong . - Popular Science from NFB-NEWSLINE.
Flathead catfish ( Pylodictis olivaris  ) may look like they are perpetually smiling, but these five foot-long   fish  are no laughing matter in   regions where they do not belong  . - Popular Science from NFB-NEWSLINE.

Flathead catfish ( Pylodictis olivaris ) may look like they are perpetually smiling, but these five foot-long fish are no laughing matter in regions where they do not belong . - Popular Science from NFB-NEWSLINE.

Update: 2025-09-08
Share

Description

Flathead catfish ( Pylodictis olivaris ) may look like they are perpetually smiling, but these five foot-long fish are no laughing matter in regions where they do not belong .
Comments 
In Channel
loading
00:00
00:00
x

0.5x

0.8x

1.0x

1.25x

1.5x

2.0x

3.0x

Sleep Timer

Off

End of Episode

5 Minutes

10 Minutes

15 Minutes

30 Minutes

45 Minutes

60 Minutes

120 Minutes

Flathead catfish ( Pylodictis olivaris  ) may look like they are perpetually smiling, but these five foot-long   fish  are no laughing matter in   regions where they do not belong  . - Popular Science from NFB-NEWSLINE.

Flathead catfish ( Pylodictis olivaris ) may look like they are perpetually smiling, but these five foot-long fish are no laughing matter in regions where they do not belong . - Popular Science from NFB-NEWSLINE.