Hello. Today on a walk I found some cool plants in a nearby mountain pond with a small stream going through it. The plants looked familiar so I took a little bit home to find if I can grow it in my tank. I have a tank, in which I will try to grow them if it turns out to be safe. Is it ok to collect wild plants and put them in your tank and what are the dangers of it? I should mention that I found them in the Swiss alps and the pond was probably frozen a few days ago, so I don't know if the plant would do well in 27° C water. But I swear I saw this plant before, either in an aquarium or in a store. Here is a photo, hope someone can help me identify it.