Both dragon and fish symbol are retrieved from Pinterest. Here's the link of those, 

Fish - https://www.zedge.net/wallpaper/f36a8851-2b4b-463f-8a7e-e80b7bed82a0?utm_source=web&utm_medium=item&utm_campaign=sharing

 Dragon - https://br.pinterest.com/pin/421508846382019629/