Marshall's Mysteries 23

Colin Marshall · Issue 146, Sep/Oct 2025 · pp. 66–69

Answers on page 68 Marshall’s Mysteries 23 Tell Them Apart. Many fish look alike, hence the need for ID books. Some look similar as one of them is trying to mimic the other to gain benefits (eg a delicious flatworm mimicking a toxic nudibranch), or due to convergent evolution resulting in similar solutions to gain advantages over the other competing animals (eg bats and birds developing wings, which their common ancestor did not have). All these animals below are not just small variations in the genus (ie both the same genus, different species) – they are all different genera (plural of genus). © Colin Marshall / Ardea © Colin Marshall / Ardea Which is the Saddled Puffer? © Colin Marshall / Ardea © Colin Marshall © Colin Marshall / Biosphoto © Colin Marshall / FLPA / Minden Which is the Leaf Scorpionfish? Which is the Humphead Wrasse? © Colin Marshall / Alamy Which is the Trumpetfish? Le…