Final answer:
The peculiar thing about the fish that the meerkats catch is that they exhibit muted colors compared to the rest of the fish population in the lake.
Step-by-step explanation:
The peculiar thing about the fish that the meerkats catch is that they exhibit muted colors compared to the rest of the fish population in the lake. The local fisherman casts wide nets to catch the most colourful fish for the aquarium store, but he throws back the dull colored fish. This event will change the make-up of the fish population because the colourful fish will be removed, leaving behind a higher proportion of the dull colored fish.