You can filter the Cat-eLog on Planet Catfish by size and see what you find.
BTW, there is no danger in a TSN breaking 24"-30" mark. We get refuse / culls from food TSN farming operations (if from SA) or just very poor quality, carelessly and cheaply mass raised TSN, if from Asia.
We have been recently discussing this on MFK. There are almost no known TSN raised by MFK-ers that broke 30", especially if bought as a "generic, species-less" TSN, which appear all to be a fasciatum or a hybrid thereof.