Future Lungfish

I did my future creature design on a South American lungfish, a fish that's able to breath on land because it has lungs. The South American lungfish also burrows in the mud to survive dry periods. The new lungfish I created has some new adaptations such as its now poisonous as a bright colored fin on top of it shows its not to be messed with. It still has lungs and has a few big armor plates on its head and tail. The new lungfish is poisonous when it bites another animal or uses its spikes on its tail to impale an animal. It also has gill flaps and flipper-like fins that it uses to burrow, walk and swim with. It is an omnivore and mostly eats anything that fits in its mouth preferably small fish or larva. It has a regenerative ability allowing it to regenerate itself from wounds.