The Gleekfish

Art done by Tortoiseman on reddit

Gleekfish (genus dentexspue, tooth spitter) are descendants of the amazon puffer that reside in rivers and saltree forests in the Americas. Their name is also misleading as they don't actually gleek, however, they do spit water. 

Biology

Gleekfish measure at about 6 inches in length and have a body shape similar to that of the avocado puffer, being more fishlike while still having that pufferfish shape. This as well as spots and alternating light yellow and gray stripes help it to camoflague while hunting.

Gleekfish mostly have a diet of terrestrial insects and sometimes molluscs. Due to not gnawing on shells constantly and chewing on insects more, the tooth growth rate is drastically reduced and dental issues are rarely ever a problem.

In order to suit their unique hunting strategy, they have a small gap in their top teeth with a channel in the roof of the mouth. This combined with the tongue being pressed towards the top of the mouth forms a perfect stream for water to shoot out of. They also have extremely good eyesight and a slightly upward facing jaw that can open wide enough to suck in their prey.

Reproduction is simple for Gleekfish, they swim upstream in the beginning of spring, lay a few thousand eggs per female, fertilize the eggs and leave only to come back next year to mate again. The hatchlings are very small and many don't make it, those that do are the ones that learn how to shoot the fastest.

Behavior

Gleekfish are solitary and only come together for mating once a year.

Gleekfish hunt positioning themselves upright, sucking in water and holding it in their stomach, puffing up in the process. Strong stomach muscles allow for the fish to send the water back out of their mouth and shoot one continous spout of water that keeps going until it deflates in order to knock their prey into the water where they get sucked up and eaten.