Ya, probably not a brilliant idea on my part. With puffers it is either 1 of 2 extremes. They a) Get swallowed or killed OR b) Attack and nip all my cichlid's tails, no matter how large or aggressive the cichlids are. My fiance wants a saltwater tank with a huge puffer, but I tried to appease her for the time being with a fresh/brackish puffer. Originally I had put in two 3 inch Fang's puffers and they were like piranhas. I had to separate them from the others to keep them from biting off the tails and fins off my fish. Even my 7 inch Jaguar fell victim to their chompers. So obviously I re-homed those guys and remembered I had in the past kept the less aggressive spotted puffers with my cichlids and had no problems. However, I did not have any catfish at the time and this is my first tiger shovelnose. I didn't realize they pretty much will swallow anything. But again, that was my fault for buying on impulse mixed with a bit of wishful thinking. The shovelnose is looking fine, his stomach has flattened out some and he is swimming around. That was a close call, could have been worse. At least not for the puffer, yikes.