There is a great variety of small creatures that can be found in the Great Marsh of Vogelheim. These critters are the unsung heroes of that biome, as they provide the basis for the greater food web, one without which none of the more impressive creatures could exist.

Vogelheim Prawns and Pinkrabbos are the crustacean clean-up crew of the waterways. They consume any dead matter that falls to the bottom, ensuring that the waters remain clean and don't turn into a fetid, stale swamp where only the toughest could survive. They also serve as a major food source for the many birds that call this wet ecosystem home.

Tiny Threshies and Paddlettes make up the majority of small fish that inhabit the wetlands. By feeding on algae, both species improve water quality and stop algal blooms. They are also responsible for keeping prawn, crab, and other invertebrate populations in check by eating their larvae.

Paddle Beetles and Chin Pikes are the mini-carnivores of the wetlands. Both are pursuit hunters and predominantly target the aforementioned small fish, as well as others that have not yet been mentioned. They themselves fall prey to birds such as Quabbicks and other seasonal visitors.

All of the above-mentioned species have adapted to the changing conditions of the wetlands. By remaining relatively small, they can survive conditions that larger species would struggle in. They can survive even in knee-deep water, a very useful ability during late spring and summer.

Additional notes:
- Pinkrabbos are the only species that eat one specific type of algae. If left unchecked, this algae can release toxins that deplete oxygen from the water. The crabs can metabolize this toxin, and the byproduct of that is their pink coloration.

- Tiny Threshies use their long, thresher-like tails to stun schools of small invertebrates (an example of convergent evolution between them and Earth's Thresher Sharks).

- Chin Pikes use their oversized chins to ram into prey and stun them. This minimizes the risk of a potential struggle and sustaining injuries.