Semi-Aggressive Freshwater Fish for a Tropical Aquarium
Here are a few other tips for dealing with aggression between fish in a marine aquarium:
One variable, the species of an aggressor, is a factor that most aquarists are very familiar with. Certain species of fish are more prone to being aggressive than others. For example, members of the angelfish genus are often belligerent in a home aquarium. There are, however, always exceptions to the rule within a species, and making generalizations can be dangerous, especially if conclusions are based on the observation of only a few individuals.
Prior residence in probably the most important factor influencing aggression in the home aquarium. Even an apparently docile species can become extremely agitated when a new fish is introduced into a tank in which it has been a long-term resident. Because it is always unwise to introduce all of your marine aquarium inhabitants to a tank within a short period of time, problems of this sort of often inevitable.
aggressive aquarium fish predators, Hydrolycus Scomberoides
Aggressive Freshwater Fish | The Aquarium Guide
Oldfield is the first to scientifically study how the environment of home aquariums affects the aggressive behavior of ornamental fish. The results are published in the online edition of Journal of Applied Animal Welfare Science, Volume 14, Issue 4.Oldfield quantified aggressive behavior as a series of displays and attacks separated by at least a second. Displays are body signals such as flaring fins. An attack could be a nip, chase or charge at another fish. In aquariums, these behaviors can lead to injury and in extreme cases to death.Along with the size of the environment, Oldfield tested the complexity of an environment and the effects of the number of fish within tanks. The addition of obstacles and hiding places using rocks, plants or other similar objects can increase the complexity of the aquarium environment. He found that an increase in tank size and complexity could reduce harmful aggressive behaviors and make for healthier fish.They can be quite fascinating and territorial, especially when they pair off and start to spawn. Some will tolerate tank mates and some can only be kept as lone individuals or in very aggressive species only tanks. Some retailers and breeders tend to keep them overcrowded in display tanks to try and limit the aggression and indeed it does seem to work. However, there could be many factors at play in this scenario. The water quality could be very poor, likely high in ammonia (and possibly nitrites) thereby causing them to appear more docile. theory is that a crowding situation prevents a lone fish from becoming dominant over a few. There are just too many other fish to dominate in a crowded tank. Once you get a few of them acclimated and at home in your aquarium the situation could be completely different.The notion that you should purchase an aquarium as large as you can afford is not a generated myth to push sales. Larger aquariums really are more stable. Water will not amass organic waste as quickly in a larger tank, and greater amounts of water are usually more forgiving in cases when the keeper makes a mistake. Keeping the stress level of your fish down decreases the chances for disease and aggression.: South American Cichlids are a diversegroup of fish often referred toas New World Cichlids. Cichlids are hardy, easy to care for fish thatadd brilliant color to the freshwater aquarium. South American Cichlidsare found from Central America through South America and can becategorized into Dwarf Cichlids, Larger Amazonian Cichlids, and LargerNeotropical Cichlids, all of which have different care levels and tankrequirements. These larger species are mostly predatory fish that areterritorial innature and should be maintained in the semi-aggressive or aggressiveaquarium. South American Cichlids have very interesting personalitiesand are extremely intelligent fish with highly evolved parental skills,making them one of the most popular groups of aquarium fish.