Muddy, slippery, slimey, disgusting annoyances they are.
Ravenous eaters, experts in camoflauge, and seemingly endlessly reproducing, Mudstelle are hardy fish native to Kazcallen
and invasive to River Artazia's
famous lake, the Deep Bend. Brought over to Artazia in a misguided attempt to help balance the ecosystem, they've begun to out perform every other species of fish within the lake, and many fear they'll begin to spread downstream soon too.
The Wrong Solution
For the last decade or so, the Deep Bend had been under assault by an infestation of disease spreading insects. The pests spend months in larval form swimming within the lake, so an idea was put forth to introduce a new species of fish to the lake to feed on the larva and help thin the insects out. The Mudstelle, with their propensity to eat anything and their reproductive cycle localized within a single body of water, were introduced with the hopes of eradicating eradicating the bothersome pests by consuming them before they ever sprouted wings and spread sickness.
As most ill-concieved plans regarding wildlife go, things took an unexpected turn for the worse. The Mudstelle as predicted made short work of the larva in the lake; but what wasn't predicted is that the new fish would also feed on every other small thing within the lake.
Insects, amphibians, and smaller fish all became food that the invasive Mudstelle happily fed upon. Soon they became the most numerous fish in the Deep Bend.
Did they eat the larva? Yes. Did it help? No, no it did not. Now we got bugs and endless fish we can't eat, can't use, can't do nothin' with.