Spotted bass

Spotted bass spawn like other black bass, and the interesting part is what happens between species rather than within one.

THE MALE BUILDS AND GUARDS A NEST, fanning a depression in gravel or coarse substrate, usually in slightly deeper water and more current than largemouth choose. Spawning is triggered by rising spring water temperature.

HE TENDS THE EGGS AND GUARDS THE FRY as other black bass do, and nest abandonment leads to rapid predation of the brood.

SPOTTED BASS SPAWN SLIGHTLY LATER AND DEEPER THAN LARGEMOUTH in waters where both occur, which is part of how the two coexist.

HYBRIDISATION IS THE REAL STORY. Where spotted bass have been introduced outside their native range they hybridise readily with native black bass — notably with redeye and shoal bass in southeastern rivers — producing fertile offspring and progressively swamping the native genome. Several endemic black bass species are threatened principally by this mechanism rather than by fishing.

WHICH MAKES INTRODUCED SPOTTED BASS A CONSERVATION PROBLEM RATHER THAN A BONUS FISHERY in those systems, and it is why some management agencies actively discourage their spread and encourage their removal.

MATURITY IS AT A FEW YEARS and the species is comparatively short-lived and slow-growing, so trophy spotted bass are old fish.

Spotted bass seasonality differs from largemouth bass in ways that matter to anybody fishing water holding both.

THEY TOLERATE COLD BETTER THAN LARGEMOUTH and remain active and catchable in water temperatures at which largemouth become lethargic. In many reservoirs the winter black bass fishery is effectively a spotted bass fishery.

THEY GO DEEPER, and they go deeper earlier. Spotted bass suspend over deep structure and open water more readily than largemouth, and in summer and winter they are frequently found well below the depths a largemouth angler would search.

CURRENT IS THEIR PREFERENCE YEAR-ROUND. In rivers and in reservoirs with flow they hold on current-swept structure — points, bluff ends, channel edges — rather than in slack backwaters.

SPRING BRINGS THEM SHALLOW TO SPAWN, slightly later and slightly deeper than largemouth in the same water.

SUMMER SEES THEM SUSPEND AND FOLLOW BAIT, frequently in open water over deep structure, chasing shad.

AUTUMN CONCENTRATES THEM ON BAIT as it does most predators.

AND THE PRACTICAL POINT IS THE SPECIES CONFUSION. An angler fishing largemouth patterns in a mixed water in cold conditions will underperform, and recognising which bass a water actually holds is the first step in reading its season.

Spotted bass are handled exactly like the other black basses — the same solid bony jaw, the same lip grip, the same rule that the fish either hangs vertically or has a hand under its belly, and the same sharp dorsal met by the supporting hand. What is genuinely different about this species is the question of whether it should be returned at all.

THE PROBLEM IS HYBRIDISATION. Where spotted bass have been introduced outside their native range they interbreed with local black basses, and in several drainages the outcome has been the progressive genetic swamping of endemic species — most conspicuously in parts of the south-eastern United States, where distinctive local bass species occupy single river systems and have been substantially hybridised out by introduced spotted bass.

That is a different kind of harm from ordinary predation or competition. A predator can be removed and the prey population recovers. A genome that has been merged with another cannot be separated again, and an endemic species that exists in one river and nowhere else does not come back.

WHICH IS WHY 'RETURN EVERYTHING' IS NOT THE DEFAULT HERE. In a number of drainages the fisheries agency's position is explicitly that spotted bass should be removed rather than returned, sometimes with no bag limit and sometimes with active encouragement — and that position sits alongside strict protection for the native bass in the same water, which makes correct identification part of the handling decision rather than a matter of interest.

SO THE PRACTICAL SEQUENCE IS: know which water you are on, know what the agency's position is for that water, and be able to tell a spotted bass from the native species it resembles before deciding what happens to the fish in your hands. In its native range it is an ordinary and valued sport fish handled like any other black bass.

And whatever the decision, the handling until it is made is the same: wet hands, support the body, do not lever the jaw sideways, and do not leave the fish on a bank while working it out.