Other are multicolored varieties that include iridescent blues, jet-black, or bright yellow. An extremely popular freshwater fish due to its prehistoric cosmetic appearance, the Arowana is well known exotic freshwater fish. Bolivian rams (also called ruby crown cichlids) are hardy freshwater tropical fish. They are fun to watch, and they might even reproduce if conditions are right. Since seawater is saltier than the liquids in a fish’s body, water inside the fish is constantly flowing out. After all, if you are a beginner in the hobby and you want fun and colorful fish, the best option for you has already emerged among these freshwater buddies. They’re missing out on a hidden treasure chest of amusement. Like most freshwater tropical fish, bettas should be kept in a heated fish tank. Their amazing colors will add to your aquarium’s exotic look. There are so many variations in color and shape that there are too many to list here. This popular freshwater fish is found in most of the aquariums of beginners and experienced fishkeepers because of its vibrant colors, aesthetic patterns and beautiful fins which are admirable. Their deep blue, yellow, red, or metallic colors will create a beautiful aquatic environment with other types of tropical fish. Many species of killifish have speckled patterns on them. These delightful friendly fish grow to between 2.4” and 3.1” (6 – 8 cm). As their name suggests, glassfish have a completely transparent body. These cichlids may be the perfect choice for a large tropical fish in a community tank.  The oldest fishhook ever found dates back to about 42,000 years ago. They are not demanding when it comes to feeding and water parameters. What makes glassfish so cool and unique among the tropical fish varieties? Freshwater Tropical Fish. Saltwater fish need to drink more water than freshwater fish. Types of Insects with Pictures and Names for Easy Identification. Bettas, also called Siamese fighting fish, are one of the most popular exotic aquarium fish. If you want to keep a few African cichlids in a tank, there are a few tips to keep in mind. Dwarf gouramis are pretty fish that are good for heated aquariums with smaller fish. Angelfish are good for novices and expert fishkeepers alike. These impressive black and red fish are best kept in large aquariums where they have plenty of room. Some of the most unique freshwater guppies are the varieties with black and red leopard-like patterns on their tail. In fact, it’s estimated that there could be more than 2000, These are a schooling fish and prefer to be kept in groups of at least five. Turn off the lights in the tank to reduce stress. Reds, oranges, and iridescent blues are the most popular colors of killifish. To keep discus fish in a freshwater aquarium requires a large fish tank. As with most tropical fish, they live on a diet of fish flakes and some live foods. They can be aggressive if other fish encroach on their territory. They are shoaling fish and there should be at least 5 of them in a 50-gallon (190 l) tank. Also, cichlids like to hide, so it’s important to have plenty of plants and decorations for cover. Because of their long fins, they should be kept away from barb fish as they have a reputation of being fin-nippers. The Red Tail Shark is a fun fish species to own. The fact that this tropical fish looks and acts like a snake in the tank make it one of the coolest bottom-feeders for your aquarium. With their large showy fins and beautiful colors, they also have to be some of the coolest fish in your tank. Otherwise this species is surprisingly undemanding. This graceful fish requires a tank of a minimum 25 gallons size. 130 most popular aquarium fishes. Fish Facts: Hearing and the Lateral Line. They get very stressed and timid when kept in smaller groups. Some of these are arranged in horizontal lines of red dots and other specimens have random spotted patterns. Some of the most spectacular species are two-toned with their body light blue at the front half and bright yellow or orange at the rear. It can grow up to 8-10 inches and live up to 10 years or more. It is not just their round shape that makes these exotic fish look amazing. Ideally, the water should be between 75 and 82°F (24 – 28°C). (2020 Reviews & Guide), 21 Best Aquarium Decorations – (2020 Reviews & Guide). Some of the rarer and expensive species have speckled patterning and amazing iridescent colors making them look very cool. Some of the most aggressive freshwater fish for aquariums are also the most popular. Even though they belong to the cichlid family, they are usually placid in nature, however they can be aggressive toward one another, especially when pairing off. Recommend only have one species of African cichlid are exotic freshwater fish for a large tropical,! 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