Reference Guide > Montana Fish Field Guide > Drums > Freshwater Drum
Freshwater Drum - Aplodinotus grunniens
Potential Species of Concern
Global Rank: G5
State Rank: S4
Agency Status
USFWS: none
USFS: none
BLM: none
CFWCS Tier: 2
General Description
Only one member of the drum family is found in Montana--the freshwater drum. This species is native to larger streams and reservoirs in the plains region of our eastern drainages. Drum are so named because they can produce sound by "drumming" muscles against their gas bladders. Drum are spring broadcast spawners, but unlike other Montana fish their eggs are buoyant. Drum are not a sport fish in Montana and are taken commercially elsewhere. Drum eat fish, insects, clams and snails.
Diagnostic Characteristics
Silvery with a pearl-gray back. This is the only Montana fish in which the lateral line extends onto the tail.
Distribution
Montana Range
Migration
Commonly a large spawning migration into tributary streams.
Habitat
Deep pools of large streams, lakes, and reservoirs. Prefers clean bottoms and moderate turbidity. Spawning has been observed to take place in lakes some distance from shore.
Food Habits
Eats a variety of aquatic invertebrates but snails and small clams are the predominant foods.
Reproductive Characteristics
Spawns May - June at 65 - 70 degrees F. Spawns in schools near surface of water. Hatching time short. Fry float near surface for a time, then seek the bottom where water is deep.
Citations & Sources
Holton, G. D. 2003. A field guide to Montana fishes. Mont. Dept. Fish, Wildl. Parks, 95 pp.
Citation for data on this website:
Freshwater Drum — Aplodinotus grunniens. Montana Field Guide. Retrieved on February 2, 2009, from http://FieldGuide.mt.gov/detail_AFCQH01010.aspx
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