Shrimp Tank Statistics 2026
Across 390 real shrimp tanks in the AquaGauge dataset, the median tank is 6 gallons — the smallest of any group in the hobby — and 36% are a dedicated 5-gallon nano. Median pH is 7.2, median nitrate 5 ppm, and real stocking runs about 0.5 shrimp per gallon. Data from 390 tanks posted to public forums.
Key shrimp statistics (July 2026)
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- The median shrimp tank is 6 gallons, the smallest of any group in the hobby, across 390 real shrimp tanks in the AquaGauge dataset (July 2026).
- 36% of shrimp keepers run a dedicated 5-gallon nano, across 390 real shrimp tanks in the AquaGauge dataset (July 2026), and 87% are 5 gallons or larger.
- Real shrimp stocking runs about 0.5 shrimp per gallon (median), across 68 real shrimp tanks in the AquaGauge dataset (July 2026) that stated both a size and a headcount.
- The median shrimp-tank pH is 7.2, and 69% read between pH 7.0 and 8.0, across 109 real shrimp tanks in the AquaGauge dataset (July 2026).
- The median shrimp-tank nitrate is 5 ppm, and 92% read 20 ppm or lower, across 99 real shrimp tanks in the AquaGauge dataset (July 2026).
Tank size: the nano is the norm, not the exception
Across 390 real shrimp tanks in the AquaGauge dataset (July 2026), the median tank is 6 gallons. That is the smallest median of any keeper group we track. 36% run a dedicated 5-gallon nano, 87% are 5 gallons or larger, and 74% are 10 gallons or less. For shrimp, the small water column is a deliberate choice, not a compromise. A stable nano suits a colony that grazes biofilm and never outgrows the tank the way fish do.
Stocking: colonies scale far past fish rules
Because shrimp bioload is tiny, real colonies pack in denser than any fish would. Across 68 real shrimp tanks in the AquaGauge dataset that stated both a size and a headcount, the median is about 0.5 shrimp per gallon, and the densest tanks run several times that. A colony self-regulates to its food and biofilm rather than to a per-gallon cap, so the useful number is a starting point, not a ceiling.
Water: stable and slightly alkaline
Shrimp tanks read like the wider hobby, tilted slightly alkaline. Median pH is 7.2 across 109 real shrimp tanks in the AquaGauge dataset, with 69% between pH 7.0 and 8.0. The nitrogen cycle reads clean: median nitrate is 5 ppm across 99 tanks, 92% at or below 20 ppm. What kills shrimp is not a specific number but a swing. Small tanks change chemistry fast, which is why steadiness matters more than hitting a target. The clean medians reflect established tanks; the alarming readings come from keepers who posted mid-crash.
How to cite this page
Cite these figures as: “AquaGauge Shrimp Tank Statistics 2026, theaquagauge.com/shrimp-statistics/ (July 2026 snapshot, 390 real shrimp tanks).” The aggregate statistics are licensed CC BY 4.0: use them freely, with attribution; a link back is appreciated. Download the full dataset from the Aquarium Statistics pillar.
Methodology
These numbers are computed directly from the AquaGauge real-tank dataset: shrimp tanks posted to r/shrimptank, with each measure calculated only over the tanks that reported it (390 stated a size, 109 a pH, 68 both a size and a headcount). They come from keepers who chose to post, so read the clean medians as the real hobby and the alarming outliers as the help queue. This page is maintained by Yevhen Bulhakov, editor of AquaGauge. Read more about how we collect the data, or see the full Aquarium Statistics pillar.
FAQ
- What size tank do most shrimp keepers actually use?
- Across 390 real shrimp tanks in the AquaGauge dataset (July 2026), the median is 6 gallons — the smallest of any group in the hobby. 36% run a dedicated 5-gallon nano and 87% are 5 gallons or larger.
- How many cherry shrimp per gallon do real keepers stock?
- Across 68 real shrimp tanks that stated both a size and a headcount, the median is about 0.5 shrimp per gallon, with some colonies far denser. Shrimp bioload is tiny, so colonies scale well past what fish stocking rules would allow.
- What water parameters do shrimp tanks run?
- Across 109 real shrimp tanks that posted a pH reading, the median is 7.2 and 69% sit between pH 7.0 and 8.0. Median nitrate is 5 ppm across 99 tanks, with 92% at or below 20 ppm. Stability matters more than any single target.
Freshwater aquarist of 8+ years.