The Jack Dempsey Fish came after the man Jack Dempsey. The fish was named after him because he was a boxer and the fish are known for fighting.
The Jack Dempsey fish is a Central American Cichlid.
Jack Dempsey - fish - was created in 1903.
labahita.
A jack fish
j elizalde naviarro
Yes.
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leatherjack
A "jack salmon" is actually a pike like Perch fish, not a salmon at all
It is the size of the food fish that matters. Even a baby Jack Dempsy will eat any live fish small enough to fit into its mouth.
That depends upon the species of sucker fish. There are several of them. I would not be putting anything other than similar sized Amazonian Cichlids in with Jack Dempseys. They are not 'Community' fish. A Jack Dempsey tank should be no smaller than 30 gallons for 2 fish.