VISUAL-REINFORCER COLOR, AND OPERANT BEHAVIOR IN SIAMESE FIGHTING FISH.

Scientists used Siamese fighting fish to test if the color of a visual reinforcer changes how much the fish works. The fish earned brief looks at a small model of another fighting fish. The model came in different colors.

Each fish got the same task, but the color of the model fish was changed across sessions. The team counted how fast the fish kept pressing the lever to see the model.

The fish worked faster when the model color matched or clashed with its own body color in certain ways. The exact numbers were not given, but the change in response rate was clear.

This shows that even in fish, the look of the reward itself can speed up or slow down behavior.

GELLEGOLLUMIGLER (1964) got roosters to peck a key for a view of another rooster. Live video kept the birds pecking more than a mirror image. Both studies prove that a social picture can work as a reinforcer, and the finer details—color for fish, movement for birds—tune the effect.

Van Hemel (1973) showed pigeons will peck when the key color simply signals food. T et al. go one step further: the color itself can be the reward, no food needed. Together they map a line from color as a signal to color as a reinforcer.

Winett et al. (1972) found red lights linked to no food never kept pigeons looking. The fish story aligns: if the model color is wrong, the fish also stop working. Both papers warn that visual stimuli only maintain behavior when they point to, or are, something the animal wants.

You may not train fish, but the rule travels: the look of the reinforcer can be as important as the item itself. When you pick photos, videos, or even badge colors for token boards, test slight changes and watch the response. A tiny visual tweak—brighter hue, favorite character, or higher contrast—could save you from raising the edible size or token amount. Match the visual reward to the learner, then measure; let the data tell you which picture truly motivates.