Brown trout in ink work in progress

This is the beginning of a brown that I will do an underwater scene with. I'm thinking a fly, crawfish, or minnow is about to get eaten but I'm not sure. I've been using Bombay india ink for the washes and acrylic from the tube for highlights. This is being worked on watercolor paper and size is 9x18. If anybody has got an idea of what would look better as to what he's going to eat let me hear it.