I don't know if this is just the vegetarian/animal lover coming out of me, but I don't think it's right to say an RTC is okay in a 55 gallon because it fits. It's a living animal for peat sake.
I'm in no way against grow out tanks. If you want to keep a monster fish in a small tank until it reaches a certain size, I say go for it as long as you are fully aware of that fish's future needs.
I have a 9" clown knife in a 120 right now. I know that I will have to eventually upgrade the tank. Unfortunately, most people such as myself can't guarantee that upgrading is a possibility. I may end up renting a place that won't allow it or I could find myself financially unable. If I can't upgrade the tank, I will have to sell him to someone who can properly care for him. I'm prepared for that.
I think where problems occur is when a person has intent to upgrade or sell the fish but all the while the fish is getting larger, the owner keeps putting it off. Then you end up with a "stunted" fish. I always here people say things such as "I don't think Tiger Shovel nose cats grow that fast. I had one in a 55 gallon for two years before it died. It didn't grow an larger than 2 feet!"
Then you have to ask yourself "Why did a catfish with a 20 year life span die within 2 years?"
The bottom line is; sell your fish or upgrade before it gets to that point. I completely understand wanting to experience the fish. Just make sure that you fully understand the needs of the fish as well as your capabilities.
I'm in no way against grow out tanks. If you want to keep a monster fish in a small tank until it reaches a certain size, I say go for it as long as you are fully aware of that fish's future needs.
I have a 9" clown knife in a 120 right now. I know that I will have to eventually upgrade the tank. Unfortunately, most people such as myself can't guarantee that upgrading is a possibility. I may end up renting a place that won't allow it or I could find myself financially unable. If I can't upgrade the tank, I will have to sell him to someone who can properly care for him. I'm prepared for that.
I think where problems occur is when a person has intent to upgrade or sell the fish but all the while the fish is getting larger, the owner keeps putting it off. Then you end up with a "stunted" fish. I always here people say things such as "I don't think Tiger Shovel nose cats grow that fast. I had one in a 55 gallon for two years before it died. It didn't grow an larger than 2 feet!"
Then you have to ask yourself "Why did a catfish with a 20 year life span die within 2 years?"
The bottom line is; sell your fish or upgrade before it gets to that point. I completely understand wanting to experience the fish. Just make sure that you fully understand the needs of the fish as well as your capabilities.