Can Ajamaru Rainbowfish and Bumblebee Catfish (South American) Live Together?

Possible with Caution

Keeping Ajamaru Rainbowfish and Bumblebee Catfish (South American) together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 150 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Ajamaru Rainbowfish

Melanotaenia ajamaruensis

Bumblebee Catfish (South American)

Microglanis iheringi

🐠Family Group
Ajamaru Rainbowfish
Rainbowfish
Bumblebee Catfish (South American)
Catfish
Temperament
Ajamaru Rainbowfish
Peaceful (2/10)
Bumblebee Catfish (South American)
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Ajamaru Rainbowfish
24–28°C
Bumblebee Catfish (South American)
22–28°C
pH Range
✓ Compatible
Ajamaru Rainbowfish
7.2–8.5
Bumblebee Catfish (South American)
6–7.5
Hardness (dGH)
✓ Compatible
Ajamaru Rainbowfish
8–20
Bumblebee Catfish (South American)
4–15
Water Type
✓ Compatible
Ajamaru Rainbowfish
Freshwater Only
Bumblebee Catfish (South American)
Freshwater Only
Flow Preference
✓ Compatible
Ajamaru Rainbowfish
Moderate
Bumblebee Catfish (South American)
Moderate
Min Tank Volume
Combined: 150 L
Ajamaru Rainbowfish
150 L
Bumblebee Catfish (South American)
75 L
Swimming Level
✓ Different zones
Ajamaru Rainbowfish
TopMiddle
Bumblebee Catfish (South American)
Bottom
🏷️Behavior Tags
Ajamaru Rainbowfish
Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Bumblebee Catfish (South American)
NocturnalShy / Slow Moving (Easily Stressed)Shrimp EaterFry PredatorPiscivore (Eats small/nano fish)
Stocking calculator

Can your tank handle Ajamaru Rainbowfish and Bumblebee Catfish (South American)?

Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.

Ajamaru Rainbowfish
Bumblebee Catfish (South American)
Test both in my tank

Behaviour & Temperament

Ajamaru Rainbowfish is a peaceful species (2/10), while Bumblebee Catfish (South American) is generally mild-mannered (3/10). This modest difference means Bumblebee Catfish (South American) may occasionally assert dominance over Ajamaru Rainbowfish.

In terms of spatial distribution, Ajamaru Rainbowfish prefers the Top (Surface) and Middle (Open Water) zones, whereas Bumblebee Catfish (South American) occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Bumblebee Catfish (South American) is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Ajamaru Rainbowfish is a known jumper, so a tight-fitting lid is essential.

To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat.

Water Parameters

The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.2 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Ajamaru Rainbowfish and Bumblebee Catfish (South American) together, plan for an aquarium of at least 150 litres with a minimum length of 90 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Plants - Densely covered, Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), Leaf Litter/Blackwater. Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Ajamaru Rainbowfish and Bumblebee Catfish (South American).

Show 9 more tank sizes

Frequently Asked Questions

Can Ajamaru Rainbowfish and Bumblebee Catfish (South American) live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 150 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Ajamaru Rainbowfish and Bumblebee Catfish (South American) need?

A minimum of 150 litres (tank length at least 90 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.

What water temperature is best for Ajamaru Rainbowfish and Bumblebee Catfish (South American) together?

Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.

Are Ajamaru Rainbowfish or Bumblebee Catfish (South American) aggressive?

Ajamaru Rainbowfish is peaceful (2/10) and Bumblebee Catfish (South American) is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Ajamaru Rainbowfish and Bumblebee Catfish (South American) need?

Both species overlap in the 7.2–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Does Bumblebee Catfish (South American) being nocturnal affect compatibility?

Bumblebee Catfish (South American) is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Bumblebee Catfish (South American) during evening hours.


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