Pike topminnow

The pike topminnow ("Belonesox belizanus"), more commonly known as pike killifish or topminnow, is a species of fish found from in Central America, Mexico to Nicaragua. It has been introduced to Florida, USA. It is the only known living member of its genus.
Description.
The pike topminnow looks like a pike. It is a specialized predator, with an extremely flexible upper jaw that lets it take large prey. If you keep it in an aquarium, it might prey on your fish.