What I can see is his tail is a bit tattered, his right pectoral looks ok in the vid, but the left pectoral leading spine is mostly, more than 50%, gone with a sharp (from splitting?) leftover and the rest of the fin is "flapping in the wind".
The left pectoral fin looks the most serious injury of them and if you are saying it has not healed at all in 6 months then
-- either it is chronically infected and inflamed (doesn't look like it but hard to judge from the video)
-- or tankmate keeps injuring it (I'd guess vundu; the TSN is not afraid of the RTC whatsoever in the video, albeit it might be a side effect of them fearing the camera in the water)
-- or too much of the spine had been broken off and when that happens the healing and grow-back are very slow (may take 1-2 years IME) and may or may not completely restore the fin to its prior size and shape.
As for the growth rate and shyness, we look to learn from you. AFAIK, you are the only corruscans owner who has been reporting diligently.
RTC and TSN look about the same length. Both 3' or more?
How big is the vundu? BTW, you are the only active and consistent reporter on the vundu too, so keep up the good work, Dazza!
Are the corruscans' tattered fins RTC's doing?
