orange sword-tail fish on white background

actinopterygii animal aquarium aquatic background brackish caudal cheerful chordata cyprinodontiformes extended fin fire fish fishing fresh freshwater gold goldfish happiness head heckel hellerii hobby hobbyists home isolated life maculatus male nature orange pet platy platyfish poeciliidae red river smiling southern swimming swordtail tail tailfin tetra tropical trout water white wild wildlife xiphophorus