I’m not sure what plant this is (if someone could tell me that would be helpful!) but it was easily 10 inches long last year. But then my angelfish started eating it’s leaves and I had to trim most of its leaves off. Since then it’s grown leaves that are 4-5 inches but they have all rotted away. Now, it’s been like this for a month or two. Barely any leaves are growing healthy and get bigger than an 2-3 inches. Why won’t it grow and/or what deficiency does it have?