Damsel fish can be carnivorous, herbivorous, or omnivorous, depending on the species. Many are omnivorous and eat both small fish and algae. For instance, the threespot damselfish mostly eats algae but also consumes tiny invertebrates. Conversely, Mediterranean damselfish primarily feed on small invertebrates. As herbivores, damsel fish help control algae growth on reefs. They graze … Read more
Regular water changes support fish health. They keep water clean, remove nitrates, and add trace minerals. Smaller, frequent changes maintain stable water quality and help control algae. However, during the cycling period, avoid excessive changes. Daily changes are not needed if you maintain good water quality. The recommended frequency for water changes typically ranges from … Read more
Cuttlefish, also called cuttles, are marine molluscs in the family Sepiidae and part of the class Cephalopoda. They are not fish; they are intelligent invertebrates related to octopuses and squids. Cuttlefish live in shallow, warm saltwater and have a special internal structure known as a cuttlebone. One of the most captivating aspects of cuttlefish is … Read more
Cuttlefish use external fertilization for reproduction. They are gonochoristic, meaning they have distinct males and females. During mating, they align head to head. Males transfer sperm to females, who can store sperm and decide when to fertilize their eggs. Females lay these fertilized eggs in protected locations for safety. After fertilization, the female cuttlefish lays … Read more
Ctenophores, or comb jellies, are not fish. They are carnivorous creatures that feed on zooplankton and phytoplankton. Ctenophores capture their prey using specialized cells, rather than filtering it from the water. They play an important role in marine ecosystems by influencing populations of their prey. Unlike traditional filter feeders like some fish, ctenophores do not … Read more
Crustaceans are aquatic animals, not fish. They live in marine and freshwater environments. Crayfish, shrimp, and crabs are examples of crustaceans. Freshwater species, like crayfish, use gills to breathe and thrive in streams and rivers. They are important for biodiversity and act as food sources in aquatic ecosystems. Freshwater fish, on the other hand, are … Read more
Yes, Crosby mine pits are open for trout fishing. These pits welcome anglers starting on the scheduled opener date. The DNR stocks them with rainbow, brook, and brown trout. Fishing regulations state that you can keep one lake trout and only use one line. Check the DNR website for details on accessibility and specific conditions. … Read more
Crocodiles are more closely related to amphibians than to ray-finned fish. They both share a common ancestor within the group Tetrapoda. This evolutionary link shows that crocodiles and amphibians have similar traits, including four limbs. Thus, the relationship is closer with amphibians. Crocodiles and amphibians share some similarities, such as both being ectothermic, or cold-blooded. … Read more
The spot (Leiostomus xanthurus), or spot croaker, is a small saltwater fish from the Sciaenidae family. It lives in estuaries and coastal waters along the Eastern United States, from the Gulf of Maine to Mexico. The spot fish has distinct brassy spots and has a short lifespan, thriving in different salinities. Both Croaker and Spot … Read more
Crappies are freshwater fish found in North America. They belong to the genus Pomoxis and the family Centrarchidae. The two main species are black crappie and white crappie. Crappies are popular sportfish, known for their community structure and feeding behavior. They thrive in warm waters, especially in Mississippi and Florida. In terms of habitat, crappie … Read more