# Eastern Elliptio (*elliptio complanata*)

The Eastern Elliptio is a type of freshwater mussel that can be found in rivers and streams. They help keep the water clean by filtering out tiny particles!

- **Category:** [Invertebrate](https://www.snappit.app/explore/categories/invertebrate)
- **Rarity:** Common
- **Danger:** 0/5 · No known danger
- **Habitat:** Freshwater rivers and streams
- **Also known as:** Common Elliptio, Eastern Mud Mussel, Elliptio mussel

![Eastern Elliptio](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Elliptio_complanata.jpg&width=800)

Photo: Phillip Westcott, Public domain · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Elliptio_complanata.jpg)

## Appearance

The Eastern Elliptio has a flattened, elongated oval shell that's usually dark brown, black, or greenish-brown. It often shows faint growth rings. Its shape is more compressed and less inflated than many other freshwater mussels.

## Taxonomy

- **Kingdom:** Animalia
- **Phylum:** Mollusca
- **Class:** Bivalvia
- **Order:** Unionida
- **Family:** Unionidae
- **Genus:** Elliptio

## Interesting facts

- The inside of their shells can be a beautiful pearly white, sometimes even purple!
- Their shells grow a new ring each year, like the rings on a tree trunk!
- These mussels don't have eyes or a brain, but they can still sense their world!
- They can pull themselves slowly along the bottom using just one strong muscular foot!

## Special abilities

- **Water Purifier:** Eastern Elliptio can clean water by constantly filtering out tiny particles because their gills act like a natural sieve, helping them find food.
- **River Drifter:** Eastern Elliptio has larvae that can hitch a ride on fish gills that helps them travel to new places and spread out in the river.
- **Shell Seal:** Eastern Elliptio can tightly close its two strong shells that helps them protect against predators and survive dry periods.

## Measurements & details

- **Length:** 7 cm
- **Lifespan:** 10 years

## Diet & Feeding

They filter tiny bits of algae and bacteria from the water for food.

- **Primary Foods:** algae, bacteria, detritus, plankton
- **Foraging Method:** Filter feeding

## Ecological connections

- **Eaten by:** [Raccoon](https://www.snappit.app/explore/raccoon) (*Procyon lotor*) — Raccoons forage for mussels in shallow water along riverbanks.
- **Eaten by:** [Muskrat](https://www.snappit.app/explore/muskrat) (*Ondatra zibethicus*) — Muskrats consume mussels, often leaving piles of shells.
- **Depends on:** [Yellow Perch](https://www.snappit.app/explore/yellow-perch) (*Perca flavescens*) — Larval mussels attach to fish gills, often yellow perch, to develop.

## Traits

- [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care.
- [Filter Feeder](https://www.snappit.app/explore/traits/filter-feeder): Filter feeders obtain nutrients by straining suspended food particles and small organisms from water.
- [Herbivorous](https://www.snappit.app/explore/traits/herbivorous): This trait characterizes organisms whose diet consists entirely or primarily of plant material.
- [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands.

## Collections

- [Invertebrates](https://www.snappit.app/explore/collections/invertebrates)

## Safety

**Danger:** 0/5 · No known danger

No special safety notes yet.

## Frequently Asked Questions

### How to identify Eastern Elliptio?

Compare body symmetry, shells, segments, legs, tentacles and how the animal moves. Invertebrates span many unrelated groups, so start with body structure. Invertebrate Identifier: upload a photo and compare the visible details.

### How long is Eastern Elliptio?

7 cm

### How long does Eastern Elliptio live?

10 years

### What does Eastern Elliptio eat?

They filter tiny bits of algae and bacteria from the water for food.

### Where is Eastern Elliptio usually found?

Freshwater rivers and streams

### How does Eastern Elliptio hunt?

Filter feeding

## More Invertebrate

- [Coral](https://www.snappit.app/explore/coral)
- [Crab Spider](https://www.snappit.app/explore/crab-spider) (*Mecaphesa asperata*)
- [Garden Spider](https://www.snappit.app/explore/garden-spider) (*Araneus diadematus*)
- [Brown Recluse Spider](https://www.snappit.app/explore/brown-recluse-spider) (*Loxosceles reclusa*)

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Source: [Eastern Elliptio: Facts & Places to See — Snappit](https://www.snappit.app/explore/eastern-elliptio)