hi, I got a flowehorn 10 days ago.. the first few days he was a bit scared but he came around after 4 days.. now he doesn’t hide and follows my finger and eats the pellets I feed him. He does get stressed sometimes when we go too close to the tank but only for a while, he changes his color back to normal after that.. a few days back his fins seemed to look like they are transparent.. I did a partial water change thinking it might be because of the water.. I did not add any conditioner or anything I just made sure the water temperature match but even after that the fins look dull and at a distance its like I can’t even see the fins.. they have black lines on the tail and fin.. but he is active and has a good appetite but I’m worried about what that color difference on his fins might be.. could you please help me out with it..