Just thought about all the flopping arowana's that you hear about on this site makes me think, why hasnt anyone designed a special tank made strictly for arowana's or any other type of aquarium escape artists (octopus, etc.) ? On the other hand at least made a lid with a lock or sliding glass, acrylic, etc? It just seems too simple to me not to have another form of tank lid that was more secure and accomodate other fish than your betta's and goldfish. Anyhow, just an idea.....hope this gives people some inspiration for all arowana owners that are DIYers. 