(Image Classification )High training accuracy and low validation accuracy

I have 15 classes, each one has around 90 training images and 7 validation images. Am I doing something wrong or are my images just really bad? It’s supposed to identify between 15 different fish species, and some of them do look pretty similar. Any help is appreciated

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https://preview.redd.it/8pujy5nglfq81.png?width=616&format=png&auto=webp&s=d312eb69116499c6f3ab48891dcc937cabcedbda

https://preview.redd.it/56xx5pgllfq81.png?width=920&format=png&auto=webp&s=49be6d38b34df73be0de196aab9b477a44eaabfd

https://preview.redd.it/f9eejttnlfq81.png?width=1114&format=png&auto=webp&s=fc80852cf39a62bfa22417cdd3c95188898b3a1c