Not furry, but we like them anyway.
Blue Coral Platy
Xiphophorus maculatus
Also called Blue Platy, Southern Platyfish
From Central and South America, from Veracruz (Mexico) to Belize1
A friendly guide, not veterinary advice. For anything about your pet's health, ask your vet.
At a glance the quick version
Males reach about 4 cm, females up to 6-7 cm total length.
Looks how to spot one
scales
The Blue Coral Platy has a laterally compressed, deep body with a bright blue to steel-grey colouration, sometimes with darker fins. It is a selectively bred colour variety of the wild southern platyfish, which is typically olive-brown with dark spots.82
Personality what they are like
Blue Coral Platies are peaceful, active mid-water swimmers that spend their time foraging and exploring. They are social fish best kept in groups of three or more. Males may chase females during breeding, but this rarely causes injury. They get along well with other peaceful community fish.845
Daily activity how busy a day looks
Low to moderate. They enjoy swimming in open areas but also need planted hiding spots. A tank of at least 40 litres (10 gallons) with gentle filtration is sufficient.18
Grooming and care the hands-on bits
Very low maintenance. Perform regular partial water changes and keep the tank clean. Stable water conditions are more important than perfect parameters. No special grooming is needed.17
Home where they are happiest
Provide a well-planted tank with open swimming areas, gentle filtration, and stable water conditions. Temperature 18-28°C, pH 6.8-8.0, water hardness 9-19 dH. A minimum 40-litre tank is recommended for a small group. Include plants like Java Moss or Anubias for shelter.153
Food basics what goes in the bowl
Omnivorous. Feed high-quality flake or micro-pellets daily, supplemented 2-3 times a week with live or frozen foods such as brine shrimp, daphnia or bloodworms. Include vegetable matter like blanched spinach or algae-based foods. Feed small amounts once or twice a day.817
Company who they like around
Peaceful community fish. Keep in groups of three or more, with a ratio of at least two females per male to reduce harassment. Compatible with other peaceful fish such as livebearers, rainbowfish, dwarf cichlids, and invertebrates. Avoid aggressive or fin-nipping species.648
The story where it all began
The Blue Coral Platy is a selectively bred colour variety of the southern platyfish (Xiphophorus maculatus), a small livebearer native to slow-moving waters in Mexico and Central America. Wild platies are typically olive-brown with dark spots, but through decades of selective breeding in the aquarium trade, many colour strains have been developed, including the bright blue form. The species has been a staple in the hobby for over a century due to its hardiness, peaceful nature, and ease of breeding. It is also widely used in genetic research.873
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Blue Coral Platy. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- FeedingSmall amounts once or twice a dayevery day
- Temperature checkevery day
- Water changeAbout 25% of the waterevery week
- Water testevery week
- Glass cleanevery week
- Filter rinseRinse in old tank water, never tap waterevery month
Owner questions the things everyone asks
How often should I feed my Blue Coral Platy?
Feed your Blue Coral Platy small amounts once or twice daily. Furry Diary's starting plan suggests feeding every day with small portions. This keeps them active and healthy without overfeeding.817 Furry Diary plan
What does a Blue Coral Platy eat, and what should it never eat?
They eat high-quality flake or micro-pellets daily, plus live or frozen foods like brine shrimp and blanched spinach a few times a week. For foods to avoid, ask your vet or a good breeder, as specific dangers aren't listed here.817
How much space does a Blue Coral Platy need?
A minimum 40-litre (10-gallon) tank is recommended for a small group. This gives them room to swim and explore with planted hiding spots.1853
What temperature, light or water does a Blue Coral Platy need?
Keep water temperature between 18-28°C, pH 6.8-8.0, and hardness 9-19 dH. Gentle filtration and a well-planted tank with open swimming areas are ideal. Light is not specified, but a normal day-night cycle works.153
How often should I clean a Blue Coral Platy's home?
Perform a 25% water change weekly, clean the glass weekly, and rinse the filter monthly in old tank water. Furry Diary's plan follows this routine to keep water stable.17 Furry Diary plan
Can a Blue Coral Platy live with others?
Yes, they are peaceful community fish best kept in groups of three or more, with at least two females per male. They get along with other peaceful fish like livebearers and dwarf cichlids, but avoid aggressive or fin-nipping species.648
How long does a Blue Coral Platy live?
With proper care, they typically live 2 to 3 years. Enjoy their bright, active company during that time.145
Can I handle a Blue Coral Platy?
Handling is not recommended for fish; they are delicate and stress easily. If you need to move them, use a net gently. For specific situations, consult an exotic-pet vet.
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.
Like what we are building? Buy Archy a bone.
All of this is free for everyone, with a source on every fact, and it will never show annoying ads. It was a big job to build, so if it helped you, buy Archy a bone. Any amount is lovely, and no is a perfectly fine answer too.
Archy is our Australian Cattle Dog and chief taste tester. Tips go to 4V3D OÜ, the small family studio behind Furry Diary.
Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.
- aquariumfishonline.com.au: platies blue coral platy xiphophorus maculatus 4cm aquariumfishonline.com.auused for origin, length cm, lifespan years, activity needs, grooming or care, habitat needs, diet basics
- cabidigitallibrary.org: cabicompendium.59752 cabidigitallibrary.orgused for length cm, coat or body
- fishbase.se: Xiphophorus maculatus fishbase.seused for length cm, habitat needs, history, fun fact
- fishlore.com: Profiles Platy fishlore.comused for lifespan years, best traits, temperament, social needs
- webmd.com: what to know about platies webmd.comused for lifespan years, temperament, habitat needs
- imperialtropicals.com: blue coral platy imperialtropicals.comused for best traits, social needs, fun fact
- aquaristatlas.com: xiphophorus maculatus aquaristatlas.comused for best traits, grooming or care, diet basics, history, fun fact
- shoalandstem.com: blue platy shoalandstem.comused for coat or body, colours, temperament, activity needs, diet basics, social needs, history, fun fact
- VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
- ASPCA: Dog grooming tips aspca.orgused for owner questions
- ASPCA: Cat grooming tips aspca.orgused for owner questions
- ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
- RSPCA: What to feed your rabbit rspca.org.ukused for owner questions
Checked 2026-10-01. Text is written in our own words from these sources.