| Common Name | Fat horse mussel |
| Language | English |
| Type | AFS |
| Official Trade Name | No |
| Rank | 1 - (Legal common name (unique)) |
| Country | United States (contiguous states) |
| Locality | |
| Ref. | Turgeon, D.D., J.F. Quinn Jr., A.E. Bogan, E.V. Coan, F.G. Hochberg, W.G. Lyons, P.M. Mikkelsen, R.J. Neves, C.F.E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F.G. Thompson, M. Vecchione and J.D. Willams, 1998 |
| Life Stage | juveniles and adults |
| Sex | females and males |
| Core | non-fish animal |
| 1st Modifier | mod. for size |
| 2nd Modifier | |
| Remarks | 'mussel' from Latin 'musculus'; lit. 'little mouse,' also 'muscle'; like muscle, derived from mus 'mouse' on the perceived similarity of size and shape. |