Can Bumblebee Goby (Brackish) and Red Tailed Black Shark Live Together?

🔴Not Recommended

Bumblebee Goby (Brackish) and Red Tailed Black Shark are not recommended as tank mates due to incompatible water types. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Bumblebee Goby (Brackish)

Brachygobius xanthozonus

Red Tailed Black Shark

Epalzeorhynchos bicolor

🐠Family Group
Bumblebee Goby (Brackish)
Gobies & Gudgeons
Red Tailed Black Shark
Cyprinids
Temperament
Bumblebee Goby (Brackish)
Mostly Peaceful (4/10)
Red Tailed Black Shark
Aggressive (7/10)
Temperature
✓ Compatible
Bumblebee Goby (Brackish)
24–28°C
Red Tailed Black Shark
22–28°C
pH Range
✓ Compatible
Bumblebee Goby (Brackish)
7–8.5
Red Tailed Black Shark
6.5–7.5
Hardness (dGH)
✓ Compatible
Bumblebee Goby (Brackish)
10–25
Red Tailed Black Shark
5–15
Water Type
✗ No overlap
Bumblebee Goby (Brackish)
Brackish Required
Red Tailed Black Shark
Freshwater Only
Flow Preference
✓ Compatible
Bumblebee Goby (Brackish)
Low
Red Tailed Black Shark
Moderate
Min Tank Volume
Combined: 250 L
Bumblebee Goby (Brackish)
38 L
Red Tailed Black Shark
208 L
Swimming Level
Shared: 1 zone
Bumblebee Goby (Brackish)
Bottom
Red Tailed Black Shark
BottomMiddle
🏷️Behavior Tags
Bumblebee Goby (Brackish)
Nano / Bite-sized (Predation Risk)Territorial (Defends specific area)Aggressive to same species/look-alikesShrimp Eater
Red Tailed Black Shark
Territorial (Defends specific area)Aggressive to same species/look-alikesHyperactive / Fast SwimmerJumper (Lid Required)

Behaviour & Temperament

Bumblebee Goby (Brackish) is a generally mild-mannered species (4/10), while Red Tailed Black Shark is semi-aggressive (7/10). This modest difference means Red Tailed Black Shark may occasionally assert dominance over Bumblebee Goby (Brackish).

Bumblebee Goby (Brackish) and Red Tailed Black Shark both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks.

Worth noting: Red Tailed Black Shark is a known jumper, so a tight-fitting lid is essential.

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 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 10–15 dGH. Regular testing will ensure conditions stay within this range.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together.

Tank Setup

To house Bumblebee Goby (Brackish) and Red Tailed Black Shark together, plan for an aquarium of at least 250 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

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

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

Frequently Asked Questions

Can Bumblebee Goby (Brackish) and Red Tailed Black Shark live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Bumblebee Goby (Brackish) and Red Tailed Black Shark need?

A minimum of 250 litres (tank length at least 120 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 Bumblebee Goby (Brackish) and Red Tailed Black Shark 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 Bumblebee Goby (Brackish) or Red Tailed Black Shark aggressive?

Bumblebee Goby (Brackish) is generally mild-mannered (4/10) and Red Tailed Black Shark is semi-aggressive (7/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Bumblebee Goby (Brackish) and Red Tailed Black Shark need?

Both species overlap in the 7–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

How do I manage Bumblebee Goby (Brackish)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Bumblebee Goby (Brackish) space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.


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