Horned Flatface

So I got an email from an actual fish biologist in New Caledonia (yeah I had to look that up) that had some kind remarks and helpful suggestions about my fish drawings. As I don't use a lot of reference when I draw my fish it seems my fish anatomy's a little whacky. From my new fish biologist buddy: "The only fins that come in pairs are the pectoral and the ventral." I was informed that most (all) fish don't have a set of anal fins, they usually have just one. The only fish that have a pair of anal fins are goldfish and aren't found in the wild. As I have goldfish that I see everyday therein lies the problem. So just for you Dominique, here's a one anal-finned fish. Thanks for the great advice!