Tetra in Gran Cenote, Astyanax aeneus, Tulum, Yucatan Peninsula, Mexico

cenote cenotes cave cavern diving cavediving cave diving cave system underwater cave grotto extreme sport freshwater waters sinkhole hole tetra tetras tetra fish freshwater fish freshwater chariciformes fish fishes shoal school schooling swarm group groups wildlife playa del carmen caribbean sea riviera maya yucatán yucatan peninsula quintana roo north america america geography under water underwater underwaterphoto underwaterpicture underwaterphotography underwaterworld tetra in gran cenote astyanax aeneus tulum yucatan peninsula mexico horizontal