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STATUS: INCOMPATIBLE ⬌ MATRIX CORRELATION INDEX

Can you keep Ember Tetra and Red Tailed Black Shark together?

Algorithmically generated environmental and behavioral compatibility report.

Ember TetraHyphessobrycon amandae
mid Layerpeaceful
✕
incompatible
Red Tailed Black SharkEpalzeorhynchos bicolor
bottom Layeraggressive
INCOMPATIBLE

Algorithmic Assessment

High predation hazard. The size ratio between Red Tailed Black Shark (6") and Ember Tetra (0.8") exceeds 4:1, and the larger species has a aggressive temperament. The smaller species will likely be hunted or eaten.

Scientific Parameter Comparison

Cross-reference water chemistry, temperature range envelopes, and physical dimensions of Ember Tetra and Red Tailed Black Shark.

Parameter MetricEmber TetraRed Tailed Black SharkCalculated Overlap
Temperature Range73°F – 84°F72°F – 82°F73°F – 82°F
pH Chemistry5.0 – 7.06.8 – 7.56.8 – 7.0
Min. Tank Capacity10 Gallons55 Gallons55 Gallons (Minimum)
Aquatic Strata ZonemidbottomSeparated Layers
Adult Size (Max)0.8" (2 cm)6.0" (15 cm)Ratio: 1 : 7.5

⚠ Physiological Mismatch Report

Our stocking engine calculations indicate that putting these two species in the same tank causes acute physiological strain. Below are the calculated parameters that violate safe cohabitation ranges:

Predation Threat MetricsSize Ratio: 7.5 : 1

Larger predators typically consume tankmates that fit into their mouths. Keeping a 0.8" species with a 6" species is dangerous.

Behavioral & Environmental Compatibility

⚔️ Do Ember Tetra and Red Tailed Black Shark Fight?

Behavioral analysis indicates a severe compatibility clash. The Red Tailed Black Shark is known for highly territorial and aggressive behaviors. In a shared environment, it is highly likely to harass, injure, or stress the more peaceful Ember Tetra, making them completely incompatible cohabitants.

🍽️ Swimming Layers & Feeding Competition

To satisfy their dietary requirements, offer a varied feeding schedule. Sinking pellets or wafers are ideal for bottom dwellers, while floating flakes or micro-granules support mid and top dwellers. The Ember Tetra occupies the mid layer, while the Red Tailed Black Shark occupies the bottom layer. This separation of swimming zones naturally minimizes direct interactions and reduces competition during feeding times.

📏 Size Difference & Predation Threat

A major physical size discrepancy exists between these two species. The Red Tailed Black Shark grows to 6.0 inches, which is over 8 times larger than the Ember Tetra at only 0.8 inches. There is a high risk of predation, as predatory fish will naturally consume any tank mate that can fit into their mouths.

Safe Tankmate Alternatives for Ember Tetra

Since the pairing between Ember Tetra and Red Tailed Black Shark is flagged as incompatible, here are 3 peaceful community tankmates that share a flawless compatibility profile with Ember Tetra and match similar water parameters:

Ember Tetramid Layer
Scientific NameHyphessobrycon amandae
Min Tank Capacity10G
Aggressionpeaceful
Temp Envelope73°F - 84°F
pH Chemistry5.0 - 7.0
Scientific NameEpalzeorhynchos bicolor
Min Tank Capacity55G
Aggressionaggressive
Temp Envelope72°F - 82°F
pH Chemistry6.8 - 7.5

Chemistry & Habitat Analysis

Temp Envelope
73°F - 82°F
Shared temperature bounds.
pH Chemistry
6.8 - 7.0
Shared safe pH bounds.
Combined Min Tank
55 Gallons
Lowest acceptable volume.

Frequently Asked Questions

Are Ember Tetra and Red Tailed Black Shark good tank mates?

High predation hazard. The size ratio between Red Tailed Black Shark (6") and Ember Tetra (0.8") exceeds 4:1, and the larger species has a aggressive temperament. The smaller species will likely be hunted or eaten.

Can you put Ember Tetra and Red Tailed Black Shark in the same tank together?

Behavioral analysis indicates a severe compatibility clash. The Red Tailed Black Shark is known for highly territorial and aggressive behaviors. In a shared environment, it is highly likely to harass, injure, or stress the more peaceful Ember Tetra, making them completely incompatible cohabitants.

What water temperature and pH parameters do Ember Tetra and Red Tailed Black Shark need?

Both species require compatible parameters. Ember Tetra needs a temperature of 73°F to 84°F and a pH of 5.0 to 7.0. Meanwhile, Red Tailed Black Shark needs a temperature of 72°F to 82°F and a pH of 6.8 to 7.5. Shared overlap range: 73°F–82°F temperature and 6.8–7.0 pH overlap.

What is the minimum combined tank volume required to house Ember Tetra and Red Tailed Black Shark?

To successfully house both species together, a baseline of 55 gallons is required. However, because the setup includes territorial behavior from Red Tailed Black Shark (aggressive), we recommend an adjusted minimum tank volume of at least 75 gallons (adding a 20-gallon safety buffer) to establish separate visual boundaries and minimize stress.

Do Ember Tetra and Red Tailed Black Shark occupy the same swimming layer?

These species occupy different vertical zones. Ember Tetra prefers the mid layer, while Red Tailed Black Shark commands the bottom zone. This natural spatial stratification creates an effective biological barrier, preventing direct face-to-face boundary friction and reducing territorial encounters.