Specimen deposited at Texas Natural History Collections (https://integrativebio.utexas.edu/biodiversity-collections/collections/ichthyology-fish)
this is for the lower fish in the pic
Very large male, in flooded rail trail past Colchester Bog, where there were also many small fish.
Photograph (c) Jonathan Sawyer.
Seek suggests Blue Land Crab (atlantic crab). iNaturalist doesn't come with anything that appears close.