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The red eye tetra (Moenkhausia sanctaefilomenae) is a stunning and distinctive freshwater species that adds a lively charm to any fish tank. Its vibrant red eyes, glistening metallic scales, and peaceful nature make these tropical fish a delight to have.<\/p>\n
This guide will cover everything you need to know about red eye tetra care. We\u2019ll discuss their size, lifespan, tank mates, water parameters, and more.<\/p>\n The Red Eye Tetra is a member of the Characidae family and hails from warm bodies of water in South America. These fish are native to Paraguay, Peru, Western Brazil, and Eastern Bolivia, so they can handle a wide range of temperatures and water conditions.<\/p>\n They\u2019re loved by both beginner and experienced fish keepers alike due to their easy care and beautiful appearance. Red Eye tetras are known for creating flashes of sparkling colors with their shoaling nature. These stunning fish have a classic tetra shape with oval-shaped bodies and transparent fins.<\/p>\n The most recognizable feature of this species is their heterochromatic eyes. The top portion of their iris is bright red, while the bottom portion is gray \u2013 like the color of their body. Red Eye tetras also have a splash of yellow on the sides of their head, as well as iridescent highlights on their gills and fins.<\/p>\n There is also some subtle sexual dimorphism with this species. Females are typically a bit larger than the males and plump up when they\u2019re ready to lay eggs. During the spawning season, the males may exhibit more color vibrancy.<\/p>\n On average, Red Eye tetras have a lifespan of about five years. This figure can vary depending on the health and quality of their living environment. For instance, if your fish were already adults when you bought them from the pet store, their lifespan could be shorter.<\/p>\n Poor red eye tetra care can also cause issues. Unsuitable living conditions, a poor diet, and a poorly designed home can all lead to a shorter lifespan.<\/p>\n Adult Red Eye tetras grow to about 2.75 inches in length from the tip of the tail to the snout. In rare cases, some individuals may reach three inches long.<\/p>\n The good news is that red eye tetra care is quite straightforward and doesn\u2019t take a ton of effort. Despite their small size, these fish have a wide range of adaptability, making them great for newer aquarists into the fish-keeping hobby.<\/p>\n When it comes to selecting a tank size for your Red Eye tetras, aim for something around 20 gallons. This is suitable for a group of about six fish.<\/p>\n Of course, if you have the space and resources, you can always go bigger. Red Eye tetras are active fish who enjoy plenty of swimming room, so they\u2019ll love being able to zip around during the day.<\/p>\n Fortunately, these fish have relatively low maintenance water requirements. Red Eye tetras are very resilient and can handle minor fluctuations in their environment.<\/p>\n Your goal is to keep the water temperature between 72-82\u00b0F (22-28\u00b0C) and maintain a pH between 6.5 and 7.5. Regular water changes are a must to keep your tank clean<\/a> and healthy. Aim for about 30-50% every two weeks.<\/p>\n In terms of water hardness, keep your levels between 4 and 18 dH. Any higher can be detrimental to the long-term health of Red Eye tetras.<\/p>\n Red Eye Tetras are peaceful and small fish, therefore they are compatible with several other species of fish that have similar characteristics. Here are some suitable tank mates for Red Eye Tetras:<\/p>\n It\u2019s important to note that tetras do best in a school of 6 or more, so it\u2019s recommended to have a group of at least 6 Red Eye Tetras in your tank. Also, be sure to provide plenty of hiding spots and swimming space for all the fish in the tank.<\/p>\n These fish also love hiding spots and plants in their habitat, so make sure to include plenty of decorations and cover if you have a larger tank.<\/p>\n In terms of diet, Red Eye tetras are omnivores that prefer a balanced diet. Look for commercially prepared flake or pellet food specifically made for tropical fish. If you want to mix things up, you can also include freeze-dried worms, brine shrimp, and bloodworms.<\/p>\n Besides high-quality food, you should also provide occasional vegetable-based supplements such as blanched zucchini or spinach.<\/p>\n This species is relatively easy to breed in captivity. Simply provide your Red Eye tetras with good water conditions, plenty of hiding spaces, and the right environment. The female will lay her eggs in a dense area among plants or in caves, and the male will then fertilize them.<\/p>\n The eggs will hatch within 24-48 hours, and the fry should be free swimming after 5-7 days. You can start feeding them small particles such as brine shrimp and micro worms once they become mobile.<\/p>\n If you\u2019re proactive about their health and nutrition, Red Eye tetras can live a long and healthy life in your aquarium. Common diseases include Ichthyophthirius<\/a>, which manifests as white spots on the skin and swim bladder disorder, which causes the fish to lose balance and float upside down.<\/p>\n Providing your fish with a healthy diet and clean living conditions is key to avoiding these issues. Regular water changes and checkups should also be done to ensure the health of your fish.<\/p>\n Red Eye tetras have some interesting traits and behaviors that make them unique. For example, they are known to display a fascinating behavior known as sneezing. This involves the fish puffing out their cheeks as if they were sneezing.<\/p>\n This behavior is thought to be a way of cleaning the gills and releasing toxins from the water. It is also believed that this species has a special type of throat muscle that helps them catch food more efficiently.<\/p>\n Finally, Red Eye tetras are often seen participating in a type of courtship behavior called pairing up. When two fish come together, they will swim in circles side by side, displaying their beautiful colors.<\/p>\n When it comes to filtration, Red Eye tetras do best with a high-quality hang-on-back filter. These filters can provide powerful mechanical, biological, and chemical filtration, removing debris and maintaining ideal water parameters.<\/p>\n Make sure to keep the current to a moderate level so that your fish are not stressed by strong water movement.<\/p>\n For optimal Red Eye tetra care, you\u2019ll want to invest in some interesting decorations and plants for your tank<\/a>. Live and artificial plants can provide a natural hiding spot for the fish and add beauty to your aquarium<\/a>.<\/p>\n You can also use bogwood or driftwood for the bottom of the tank, as Red Eye tetras enjoy hiding among the roots. Finally, a sandy substrate is best for these fish, as they like to burrow into the sand and sift through it.<\/p>\nSpecies Summary<\/strong><\/h2>\n
Lifespan<\/strong><\/h2>\n
Average Red Eye Tetra Size<\/strong><\/h2>\n
Care<\/strong><\/h2>\n
Tank Size<\/strong><\/h2>\n
Water Parameters<\/strong><\/h2>\n
Tank Mates<\/strong><\/h2>\n
Diet<\/strong><\/h2>\n
Breeding<\/strong><\/h2>\n
Health<\/strong><\/h2>\n
Interesting Facts<\/strong><\/h2>\n
Filter Type<\/strong><\/h3>\n
Suitable Decor<\/strong><\/h3>\n
Lighting<\/strong><\/h3>\n