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is it a white bass or a white perch?

WHITE BASS (Morone chrysops)

  • The body is deepest below the dorsal fin and the depth remains fairly uniform below the entire spin dorsal fin.
  • From 6 to 10 dark lines run horizontally down the back and sides.
  • When the spiny dorsal fin is pulled erect, the soft dorsal fin remains relaxed.
  • Each of 3 bony anal fin spines are of different lengths and are arranged in ascending order.
  • The anal fin usually has I I or 12 soft rays behind the 3 bony spines.

WHITE PERCH (Morone americana)

  • The body is deepest just ahead of, or at the beginning of, the dorsal fin.
  • There are no lines or stripes on the back or sides.
  • When the spiny dorsal fin is pulled erect, the soft dorsal fin also becomes erect.
  • The second and third bony anal spines are almost exactly the same length.
  • The anal fin usually has 8 or 9 soft rays behind the 3 bony spines.

The white bass and the white perch are members of a family known as the temperate basses, Percichthyidae, and are closely related to a very popular saltwater game fish, the striped bass (Morone saxatilis). Many anglers wrongly assume that the white perch is related to the yellow perch (Percaflavascens) but each are members of distinctly different families.

The white bass is a native species of Lake Erie and has been a popular sport and commercial fish since Ohio's early days. The white perch, on the other hand, is an invading species that has only recently appeared to be permanently establishing itself in Lake Erie. Originally a native of salt, brackish and fresh waters along the Atlantic coastal plain, the white perch apparently entered Lake Ontario in the 1940s via the Mohawk River, which connects the Hudson River with Lake Ontario's drainage basin. The first reports of white perch in Lake Erie occurred in 1953, after the fish apparently entered the lake via either the Erie Barge Canal or the Welland Canal. Several white perch were collected in Lake Erie by commercial fishermen and government agencies between 1973 and 1975 and today they are the second most abundant species in the Western Basin, according to the Ohio Division of Wildlife.

Both the white bass and the white perch are well suited to the types of habitats found in Lake Erie. The white bass is intensively sought by sportsmen during spring spawning runs in the Maumee, Sandusky, and Portage Rivers, and around the reefs and islands of western Lake Erie during the summer. Thermal discharges from electric plants attract large numbers of white bass year round, and consequently, large numbers of anglers. White perch are now very common in shallow portions of the lake-including river mouths, bays, reefs, and near shore areas. Yellow perch anglers sometimes find white perch to comprise up to half of their daily bag.

While white bass are abundant and widespread in many lakes, reservoirs, and large deep rivers throughout the state, white perch have not been reported outside Lake Erie. However, in the Ohio River and its tributaries in southeastern Ohio, the freshwater drum is commonly, but incorrectly, called white perch.

Although Ohio's state record white bass weighed 4 pounds and measured 21 inches, the usual size seen in the Lake Erie sport catch range from 9 to 15 inches. White perch are smaller than white bass when fish of the same age are compared, and throughout most of their range seldom exceed 10 inches. Ile current Ohio state record white perch weighed 1.42 pounds and measured 14 1/16 inches.


OHSU-FS-005 by Fred L. Snyder, Ohio Sea Grant Extension District Specialist. 1979. Revised 1989. Reprinted 1991.

The original publication was produced by the Ohio Sea Grant college Program (projects ml P-2 and A/EP-1 under grant NA90AA-D-SG496).

Ohio Sea Grant College Program
The Ohio State University
1314 Kinnear Road
Columbus, OH 43212-1194
Tel. 6141292-8949
Fax 6141292-4364


Other exotic species pages:

AIS: An Educator's Information and Materials Guide (PDF download)
A Field Guide to Aquatic Exotic Plants and Animals
Eurasian Watermilfoil Factsheet
Eurasian Watermilfoil ID Card
Exotic Aquatics Traveling Trunk
Exotic Flowering Rush
Exotics To Go! CD
Fishhook Waterflea
Is it a White Bass or a White Perch
Purple Loosestrife ID Card
Purple Loosestrife: What You Should Know, What You Can Do
Round Goby ID Card
Round Gobies Invade North America
Ruffe: A New Threat to our Fisheries
Ruffe ID Card
Rusty Crayfish: A Nasty Invader
Sea Grant Nonindigenous Species Compact Disk Information
Sea Lamprey: The Battle Continues
Spiny Tailed Bythotrephes
Three-State Exotic Species Boater Survey
Threespine Stickleback
Zebra Mussel ID Card
Zebra Mussel Overview

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 www.seagrant.umn.edu/exotics/wperch.html modified January 26, 2010