The Boesemani Rainbowfish is not only an attractive species but one that seem to put on quite the light show while swimming around tank. Red fins offset an electric blue body. In any tank, they demand attention.
Their bright colors makes them a favorite among today’s hobbyists. Bold coloration makes for a nice-looking tropical tank, yet they are less fussy then some species such as discus or neon tetras. But that beauty come with certain requirements.
Like most social fish, you’ll have to be willing to give it enough space, maintain appropriate numbers per tank, and more importantly, be patient. Otherwise, your Boesemani rainbowfish will get stressed out and probably sick if you keep them the way you do other “community” fish. They need space to roam freely and must knows how to interact within their social group.
Essential Care Guide For Boesemani Rainbowfish
Tank Size and Layout Requirements
To properly care for them, you have to mimic there river home in Indonesia. They are active swimmers, so they needs open space to swim with only a few plant rather than heavily planted tanks. The lighting scheme, filtration requirements, and even tank set-up must takes this into consideration.
Failure to do so will result in fish that hides and eventually get aggressive toward each other. No one wants that; what you’re looking for is fish that show off, not run away from everything. The first non-negotiable rule is tank size.
Don’t make the common mistake of keeping a single male/female or two males plus a female together in your standard twenty-gallon tank just because they are relatively small adults at 3-4″. That’s a recipe for disaster, and you need at least a fifty-five-gallon tank if you want to keep a decent group. Since they can grows three or four inches long, a bigger tank is better.
Length is important as well since it give these fish the room they need to swim around. It also promotes natural schooling behavior that reduces aggression and stress. Remember: narrow tanks cause bottlenecks that becomes a source for territorial disputes.
Schooling Behavior and Group Dynamics
Tank size should match the number of fish. Keeping them in pairs often result in bullying because Boesemani Rainbows are hierarchical; you need at least six to disperse that aggression. Six+ is minimum number of fish to have.
Power dynamics are simple: a larger group spreads aggression around so no one gets too much focus. Less stress per individual mean more fish. And this displays their natural schooling instinct better; and that’s what you want to see.
The show is so much cooler when they’re really going at it. Keep the water clean and the water parameters stable. Because these fish comes from fast-flowing river environments, they don’t handle high levels of ammonia or nitrate very well.
Water Quality and Filtration Needs
It must have a gentle flow of water (provided by a high-flow filter). This simulates what they’re used to in the wild and also aerates the water. Boesemani Rainbowfish are not tolerant of bad water, which means you must do regular water changes…
At least partials. Test your water regularly. Short term perfection isn’t as important as consistency, but you need some of each for long-term health.
Diet and Feeding Guide
One more thing is nutrition. This species is a carnivore, meaning they eats meat. While flake food may keep your fish alive, it won’t make them as active or colorful.
To maintain these beautiful fish at their best, provide a balanced diet that includes high-quality pellets, freeze dried/brine shrimps, and frozen bloodworms. Nutritionally speaking, variety is important. Avoid malnutrition.
Feed sparingly. Because these fish love to eat, you’ll have to fight the temptation of feeding them too much to help maintain your water parameters. How do you know if you’re feeding them too much?
Your fish will constantly beg for more (and yes, begging is realy a thing). You should also select compatible tank mates. Long finned, slow moving fish are not good companions for this active fish.
Compatible Tank Mates
During feed time, the Boesemani Rainbow gets nippy. Avoid keeping them with large tetras, such as large tiger barbs, that will bully them. Also, avoid other cichlids that is more aggressive than they are.
That said, smaller barbs and even others like rasboras gets along fine with them since they’re all fairly active mid-water swimmers. You want to keep them in an environment that shares their energy level but doesn’t compete for dominance. Keep the background simple for the setup.
Tank Decor and Lighting Setup
A dark substrate will bring out there red and blue colors. Provide structure in the form of rocks or some driftwood. Leave the middle open so they can swim around.
You can have live plants but put them in the corners or background. Don’t put too much vegetation because they don’t require this. If you’re worried about them feeling threatened they’ll like a few places to hide.
Lighting will show off their iridescent scales; the visual payoff for investing in tank size and water quality. The last ingredient is patience. It’s normal for newly acquired Boesemani Rainbows to hide for days (sometimes weeks).
Acclimation and Patience Tips
Don’t disturb the tank and rush them out. Keep everything stable, continue regular feeding, and let them adjust. They will eventually come out, explore, and show off there colors.
The result? It is a colorful and dynamic school that adds life to your aquarium. It’s worth the effort and investment of space.
