Sometimes it’s just easier to look at a chart and move on.  For more detail about a compatibility component visit the compatibility discussions.  These charts are for freshwater and saltwater fish providing a summary of the compatibility information and more.

Each chart can be enlarged and zoomed into to see a specific fish or compatibility value.

The Water Temperature Compatibility chart examines the water temperature fish prefer.  Many fish have specific biological requirements for ranges of temperature in their natural habitat.  The temperature of water can influence general health, breeding, and activity.  So, it is important to keep temperatures of the aquarium constant with only slight variances.

Compatibility is determined by similar water temperatures and represented using the Celsius scale.

To create this chart the dGH preference was established for each species of fish.

Then a compatibility score was assigned values indicated below.

• Dark Amber: Highly Compatible (Score: 3)
• Medium Amber: Compatible (Score: 2)
• Light Amber: Slightly Compatible (Score: 1)

Note: There will always be some variation in water temperature in an aquarium.  The variation usually will not exceed a full degree.