Hey guys. I took in a rescue Betta today on very short notice. A friend of mine got bored of him and mentioned he was going to flush this little guy because he wanted "more exciting" fish instead and didn't realize you couldn't mix and match fish with bettas before buying it. Sigh. Don't get me started. So I took him in. I put him in a 5.5 gallon and kind of just threw together some spare gravel, a hideaway and silk plants I have laying around for the time being. It's not the Ritz, but it's not the toilet (or the little 2 gallon he was previously in.) The filter cartridge is an extra from a beautifully established tank I have (I always keep multiples for this reason!) and he has a heater set at 79 degrees. The thing is, he's a crowntail. I've never owned a crowntail before, and when I got him home I've noticed it looks like parts of his fins are missing. Especially from the top fin? The very edges of his fins are also a little clear looking. I can't tell if this is how a crowntail looks naturally or if he has a problem. He was being previously kept in a nonheated, nonfiltered tank so I can only imagine his water parameters weren't ideal. My friend is an idiot. Can someone tell me if this looks like fin rot or if this is just how crowntail fins typically look? I've only ever owned a half moon and a dragonscale so I'm used to big fluffy extravagant fins. Tell me what you Betta enthusiasts think? Thanks guys.