Alligator gar are...

[newton325]

Sport fishermen like to try to catch the alligator gar. Alligator gar are the second-largest freshwater fish in North America. They can grow as large as 2.7 meters and weigh more than 136 kilograms. Sauer says their large size is one reason they disappeared in the 1990s.
Ancient Fish Returns to Illinois Waters
Any wrong with "Alligator gar are..." ?

 

[heypresto]

Why do you think there might be something wrong with it?

 

[newton325]

Why do you think there might be something wrong with it?

I think it should be "Alligator gars are...".

 

[heypresto]

Like 'fish' it appears that the plural of 'gar' is usually 'gar'. Especially when you are talking about them as a species or type of fish.

 

[Andygc]

That's true of most fish. Trout swim in rivers, salmon jump up weirs, cod live in the North Sea ...

 

[kentix]

I've never thought about that before. The plural of fish is fish in most contexts. And some types of fish match that. "I caught two trout." But some don't. "Three sharks were swimming near our boat."