Leporinus fasciatus life span

[Morti]

He is does have a few scars and missing a pectoral fin but still in good shape. I have been waiting for him to pass for about 4 years (with out the swirly method as suggested by a family member). I want to replace the flooring in my living room but i don't want to stress him out by moving the tank as he can be a bit of a bugger to catch. The tank is completely covered in algae (his food source). We were evacuated for Yellowknife, NWT for 2 weeks due to forest fires and he did quite well on his own. He does not like the tank cleaned and freaks out, he has knocked himself out a few times hitting the tank lid and ending up on the bottom of the tank upside down for the day . I also chased him around the living room once after he jumped out when I tried to clean the tank. I now only clean the filters (have 2 Fluval filters and clean them alternately) and do water changes.

Our silver shark is very similar bit normally no problem. A few year ago we had to move the tank and dropped the water level down so it's back was still underwater (about 6"), we went into the other room and heard an almighty thud that turned out to be the silver shark landing on the floor. It had jumped over two feet up and out of the tank in the bare minimum of water which was quite impressive. It has also hit the lid during a waterchange and cracked the glass in two but it's generally well behaved if you say it's had one water change a week for 30 years, that's about two events in 1500.