Euryhaline organisms can live in both freshwater and saltwater. The short-finned molly (Poecilia sphenops) is one such example. These fish adapt to different salinities, enabling them to thrive in various aquatic environments. Other euryhaline species include some types of salmon and certain shark species. Despite their different environments, these fish share similarities in anatomy and … Read more

Snook are primarily saltwater fish, but they can also live in freshwater. They prefer warm habitats, like those found in Texas and the Gulf of Mexico. Snook migrate between freshwater and saltwater based on water temperature. Their behavior shows they can adapt to different salinity levels for feeding and reproduction. Snook are known for their … Read more

Most small marine fish are omnivores. They need both meat-based foods and plant-based foods to thrive. Commercial fish food, like flakes or pellets, is easy to find. However, a varied diet enhances their health and brightens their coloration. Good nutrition supports their overall well-being and increases their longevity. Feeding habits of small fish can vary … Read more

Silversides are small fish from the family Atherinidae. They live in both saltwater and freshwater habitats. Many species are found in coastal areas. Silversides thrive in warm and temperate regions, making them versatile schooling fish in various environments around the world. For aquarium care, maintaining water quality is crucial. Silversides require a well-cycled tank with … Read more

The Silver Dollar Fish is a freshwater fish recognized for its flat body and peaceful nature. It is related to the Piranha but is non-aggressive. This herbivore feeds mainly on plants and prefers swimming near the water’s surface. Its calm behavior and diet make it a popular choice for aquariums. Caring for Silver Dollar Fish … Read more

Siamese algae eaters show schooling behavior, especially when kept in groups. They can also live solo and defend their territories as they grow. These fish have a long lifespan, typically reaching up to ten years. Their social habits make them compatible with other species, making them ideal for community fish tanks. In terms of care, … Read more

American shad are anadromous fish that mainly live in the Atlantic Ocean. They migrate to freshwater rivers to spawn, returning to their birth rivers. Although they spend most of their life in saltwater, their unique lifecycle includes the critical spawning process in freshwater. Shad thrive in clean, flowing waters rich in vegetation. Their presence signals … Read more

Sesame seeds are not fish eggs. Sesame seeds come from the sesame plant and are used in cooking. Fish eggs, like tobiko, provide a different texture. Sesame is a recognized allergen and falls under food allergy regulations in the U.S., alongside other major allergens. The composition of sesame seeds and fish eggs also differs. Sesame … Read more

Seniors in Pennsylvania can fish for trout with a senior resident or senior lifetime license at age 65. If they hold a senior lifetime license issued before January 1, 1991, they do not need a separate trout permit. Always check local fishing regulations for updates. To fish legally, seniors must possess a valid fishing license … Read more

Seahorses are primarily saltwater fish found in oceans. Some species can survive in brackish water, a mix of freshwater and saltwater. They thrive in habitats like seagrasses and coral reefs. These environments are vital for marine biology. However, seahorses do not live in freshwater. Caring for seahorses in an aquarium demands attention to detail. Aquarists … Read more