As of my last update in September 2021, the term "Madagascar Rainbowfish" could refer to the Bedotia spp., which are rainbowfish species native to Madagascar. Here are some general details:
 
Specifications:
Average Size: Varies by species, generally around 3-4 inches.
Lifespan: 3-5 years
 
Characteristics:
Typically display vibrant colors, and males often have more vivid hues.
Long, slender body shape.
 
Habitat:
Native to freshwater habitats in Madagascar, such as rivers and streams.
 
Behavior:
Generally peaceful, suitable for community aquariums.
Appreciates swimming space and places to hide.
 
Tank Size:
Suitable for a moderately-sized aquarium. A tank of at least 30 gallons is recommended.
 
Care Level:
Moderate.
Requires good water quality and regular maintenance.
 
Diet:
Omnivorous. Enjoys a varied diet, including high-quality flakes, pellets, and live or frozen foods.
 
Water Parameters:
pH: 7.0-8.5
Temperature: 72-78°F
Hardness: 5-20 dGH
 
Note:
Provide a well-planted aquarium and open swimming areas.
Madagascar Rainbowfish are known for their beautiful colors, making them a popular choice for aquarium enthusiasts.
 
Disclaimer: "Please note that these are general guidelines, and for more accurate values or specific care requirements, we encourage you to contact Living Aquarium by phone or in person. Within store hours, our team of experts is always happy to answer any questions you may have and provide personalized guidance on care."