{
 "metadata": {
  "name": "AquaGauge real-tank aquarium dataset (aggregate statistics)",
  "version": "2026-07",
  "snapshotDate": "2026-06-28",
  "totalTanks": 6414,
  "temporalCoverage": "2010-08/2025-05",
  "temporalCoverageJoinedRows": 6414,
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "AquaGauge Aquarium Statistics 2026 — https://theaquagauge.com/aquarium-statistics/",
  "homepage": "https://theaquagauge.com/aquarium-statistics/",
  "methodology": "https://theaquagauge.com/methodology/"
 },
 "measures": {
  "gallons": {
   "field": "gallons",
   "sub": "all",
   "n": 5134,
   "median": 20.0,
   "mean": 39.0,
   "min": 1,
   "max": 1200,
   "q1": 10.0,
   "q3": 50.0,
   "distribution_pct": {
    "under_5g": 4,
    "5g": 14,
    "6_9g": 3,
    "10g": 18,
    "over_10g": 61,
    "ge_5g": 96,
    "ge_10g": 78
   },
   "derived": {
    "n": 5134,
    "le_10g_pct": 39,
    "le_20g_pct": 58,
    "exact_pct": {
     "5": 14,
     "10": 18,
     "20": 14
    }
   }
  },
  "temp_f": {
   "field": "temp_f",
   "sub": "all",
   "n": 369,
   "median": 78,
   "mean": 77.9,
   "min": 64,
   "max": 88,
   "q1": 76.0,
   "q3": 80.0
  },
  "ph": {
   "field": "ph",
   "sub": "all",
   "n": 741,
   "median": 7.4,
   "mean": 7.2,
   "min": 4.0,
   "max": 9.0,
   "q1": 7.0,
   "q3": 7.6,
   "distribution_pct": {
    "7.0_8.0": 71.3,
    "under_6.5": 10.1
   },
   "derived": {
    "under_7_pct": 24,
    "n": 741
   }
  },
  "nitrate": {
   "field": "nitrate",
   "sub": "all",
   "n": 1015,
   "median": 10.0,
   "mean": 16.2,
   "min": 0.0,
   "max": 400.0,
   "q1": 0.5,
   "q3": 20.0,
   "distribution_pct": {
    "le_20ppm": 83.3,
    "over_40ppm": 6.2
   }
  },
  "nitrite": {
   "field": "nitrite",
   "sub": "all",
   "n": 733,
   "median": 0.0,
   "mean": 4.2,
   "min": 0.0,
   "max": 343.6,
   "q1": 0.0,
   "q3": 2.0,
   "derived": {
    "detectable_pct": 34,
    "n": 733
   }
  },
  "ammonia": {
   "field": "ammonia",
   "sub": "all",
   "n": 902,
   "median": 0.0,
   "mean": 2.2,
   "min": 0.0,
   "max": 100.0,
   "q1": 0.0,
   "q3": 0.25,
   "derived": {
    "detectable_pct": 31,
    "n": 902
   }
  }
 },
 "communities": {
  "aquariums": 734,
  "bettafish": 621,
  "plantedtank": 536,
  "shrimptank": 521,
  "corydoras": 676,
  "cichlid": 515,
  "goldfish": 559,
  "guppies": 303,
  "discus": 395,
  "aquascape": 440,
  "fishtank": 529,
  "aquariumhelp": 480
 },
 "species": {
  "corydoras": {
   "species": "corydoras",
   "reports_total": 289,
   "reports_with_size": 173,
   "by_tank_size": {
    "6-10g": {
     "n": 32,
     "median": 3.5,
     "min": 1,
     "max": 8
    },
    ">40g": {
     "n": 41,
     "median": 6,
     "min": 1,
     "max": 25
    },
    "11-20g": {
     "n": 71,
     "median": 5,
     "min": 1,
     "max": 20
    },
    "21-40g": {
     "n": 25,
     "median": 5,
     "min": 2,
     "max": 11
    },
    "<=5g": {
     "n": 4,
     "median": 4.0,
     "min": 2,
     "max": 6
    }
   },
   "per_gallon": {
    "median": 0.2,
    "max": 6.0
   }
  },
  "shrimp": {
   "species": "shrimp",
   "reports_total": 104,
   "reports_with_size": 68,
   "by_tank_size": {
    "<=5g": {
     "n": 15,
     "median": 5,
     "min": 2,
     "max": 30
    },
    ">40g": {
     "n": 8,
     "median": 8.5,
     "min": 5,
     "max": 50
    },
    "11-20g": {
     "n": 14,
     "median": 5.5,
     "min": 1,
     "max": 50
    },
    "21-40g": {
     "n": 12,
     "median": 7.5,
     "min": 4,
     "max": 45
    },
    "6-10g": {
     "n": 19,
     "median": 5,
     "min": 2,
     "max": 40
    }
   },
   "per_gallon": {
    "median": 0.5,
    "max": 6.0
   }
  },
  "guppy": {
   "species": "guppy",
   "reports_total": 53,
   "reports_with_size": 31,
   "by_tank_size": {
    "11-20g": {
     "n": 8,
     "median": 3.5,
     "min": 1,
     "max": 10
    },
    ">40g": {
     "n": 6,
     "median": 4.5,
     "min": 2,
     "max": 35
    },
    "6-10g": {
     "n": 9,
     "median": 6,
     "min": 2,
     "max": 10
    },
    "21-40g": {
     "n": 5,
     "median": 4,
     "min": 2,
     "max": 9
    },
    "<=5g": {
     "n": 3,
     "median": 4,
     "min": 4,
     "max": 6
    }
   },
   "per_gallon": {
    "median": 0.3,
    "max": 1.2
   }
  },
  "neon tetra": {
   "species": "neon tetra",
   "reports_total": 51,
   "reports_with_size": 36,
   "by_tank_size": {
    "21-40g": {
     "n": 6,
     "median": 5.0,
     "min": 2,
     "max": 11
    },
    "11-20g": {
     "n": 17,
     "median": 6,
     "min": 2,
     "max": 14
    },
    ">40g": {
     "n": 8,
     "median": 9.0,
     "min": 3,
     "max": 20
    },
    "6-10g": {
     "n": 4,
     "median": 5.0,
     "min": 3,
     "max": 7
    },
    "<=5g": {
     "n": 1,
     "median": 4,
     "min": 4,
     "max": 4
    }
   },
   "per_gallon": {
    "median": 0.3,
    "max": 0.93
   }
  },
  "snail": {
   "species": "snail",
   "reports_total": 46,
   "reports_with_size": 28,
   "by_tank_size": {
    ">40g": {
     "n": 10,
     "median": 1.0,
     "min": 1,
     "max": 4
    },
    "11-20g": {
     "n": 6,
     "median": 1.5,
     "min": 1,
     "max": 3
    },
    "21-40g": {
     "n": 3,
     "median": 3,
     "min": 1,
     "max": 5
    },
    "<=5g": {
     "n": 2,
     "median": 2.0,
     "min": 2,
     "max": 2
    },
    "6-10g": {
     "n": 7,
     "median": 2,
     "min": 1,
     "max": 4
    }
   },
   "per_gallon": {
    "median": 0.09,
    "max": 0.4
   }
  },
  "peppered corydoras": {
   "species": "peppered corydoras",
   "reports_total": 39,
   "reports_with_size": 20,
   "by_tank_size": {
    "11-20g": {
     "n": 10,
     "median": 3.5,
     "min": 1,
     "max": 20
    },
    "6-10g": {
     "n": 4,
     "median": 2.5,
     "min": 1,
     "max": 7
    },
    ">40g": {
     "n": 5,
     "median": 7,
     "min": 5,
     "max": 9
    },
    "21-40g": {
     "n": 1,
     "median": 5,
     "min": 5,
     "max": 5
    }
   },
   "per_gallon": {
    "median": 0.16,
    "max": 1.33
   }
  },
  "otocinclus": {
   "species": "otocinclus",
   "reports_total": 39,
   "reports_with_size": 27,
   "by_tank_size": {
    "11-20g": {
     "n": 14,
     "median": 3.0,
     "min": 1,
     "max": 7
    },
    ">40g": {
     "n": 8,
     "median": 4.5,
     "min": 2,
     "max": 12
    },
    "6-10g": {
     "n": 2,
     "median": 5.0,
     "min": 4,
     "max": 6
    },
    "21-40g": {
     "n": 3,
     "median": 3,
     "min": 2,
     "max": 4
    }
   },
   "per_gallon": {
    "median": 0.14,
    "max": 0.6
   }
  },
  "julii corydoras": {
   "species": "julii corydoras",
   "reports_total": 36,
   "reports_with_size": 25,
   "by_tank_size": {
    "11-20g": {
     "n": 11,
     "median": 5,
     "min": 2,
     "max": 7
    },
    "21-40g": {
     "n": 7,
     "median": 6,
     "min": 3,
     "max": 7
    },
    "6-10g": {
     "n": 5,
     "median": 3,
     "min": 2,
     "max": 5
    },
    ">40g": {
     "n": 2,
     "median": 6.0,
     "min": 4,
     "max": 8
    }
   },
   "per_gallon": {
    "median": 0.21,
    "max": 0.5
   }
  },
  "pygmy corydoras": {
   "species": "pygmy corydoras",
   "reports_total": 33,
   "reports_with_size": 22,
   "by_tank_size": {
    "6-10g": {
     "n": 7,
     "median": 6,
     "min": 4,
     "max": 8
    },
    ">40g": {
     "n": 2,
     "median": 16.5,
     "min": 8,
     "max": 25
    },
    "<=5g": {
     "n": 1,
     "median": 6,
     "min": 6,
     "max": 6
    },
    "11-20g": {
     "n": 11,
     "median": 8,
     "min": 2,
     "max": 10
    },
    "21-40g": {
     "n": 1,
     "median": 7,
     "min": 7,
     "max": 7
    }
   },
   "per_gallon": {
    "median": 0.4,
    "max": 2.0
   }
  },
  "sterbai corydoras": {
   "species": "sterbai corydoras",
   "reports_total": 30,
   "reports_with_size": 15,
   "by_tank_size": {
    ">40g": {
     "n": 7,
     "median": 6,
     "min": 3,
     "max": 8
    },
    "11-20g": {
     "n": 5,
     "median": 5,
     "min": 2,
     "max": 8
    },
    "21-40g": {
     "n": 2,
     "median": 4.5,
     "min": 4,
     "max": 5
    },
    "6-10g": {
     "n": 1,
     "median": 5,
     "min": 5,
     "max": 5
    }
   },
   "per_gallon": {
    "median": 0.11,
    "max": 0.5
   }
  },
  "albino corydoras": {
   "species": "albino corydoras",
   "reports_total": 30,
   "reports_with_size": 19,
   "by_tank_size": {
    "11-20g": {
     "n": 8,
     "median": 3.0,
     "min": 2,
     "max": 7
    },
    ">40g": {
     "n": 5,
     "median": 3,
     "min": 1,
     "max": 8
    },
    "21-40g": {
     "n": 3,
     "median": 6,
     "min": 4,
     "max": 6
    },
    "6-10g": {
     "n": 3,
     "median": 3,
     "min": 2,
     "max": 3
    }
   },
   "per_gallon": {
    "median": 0.15,
    "max": 0.35
   }
  },
  "cardinal tetra": {
   "species": "cardinal tetra",
   "reports_total": 26,
   "reports_with_size": 16,
   "by_tank_size": {
    ">40g": {
     "n": 11,
     "median": 12,
     "min": 6,
     "max": 30
    },
    "11-20g": {
     "n": 3,
     "median": 6,
     "min": 4,
     "max": 9
    },
    "21-40g": {
     "n": 2,
     "median": 8.0,
     "min": 6,
     "max": 10
    }
   },
   "per_gallon": {
    "median": 0.19,
    "max": 0.45
   }
  },
  "bronze corydoras": {
   "species": "bronze corydoras",
   "reports_total": 23,
   "reports_with_size": 11,
   "by_tank_size": {
    "11-20g": {
     "n": 5,
     "median": 3,
     "min": 2,
     "max": 5
    },
    "6-10g": {
     "n": 3,
     "median": 3,
     "min": 3,
     "max": 5
    },
    ">40g": {
     "n": 3,
     "median": 6,
     "min": 3,
     "max": 6
    }
   },
   "per_gallon": {
    "median": 0.15,
    "max": 0.5
   }
  },
  "ember tetra": {
   "species": "ember tetra",
   "reports_total": 18,
   "reports_with_size": 13,
   "by_tank_size": {
    "6-10g": {
     "n": 4,
     "median": 5.5,
     "min": 5,
     "max": 7
    },
    "11-20g": {
     "n": 6,
     "median": 5.5,
     "min": 1,
     "max": 12
    },
    ">40g": {
     "n": 1,
     "median": 13,
     "min": 13,
     "max": 13
    },
    "21-40g": {
     "n": 2,
     "median": 8.5,
     "min": 3,
     "max": 14
    }
   },
   "per_gallon": {
    "median": 0.4,
    "max": 0.7
   }
  },
  "panda corydoras": {
   "species": "panda corydoras",
   "reports_total": 18,
   "reports_with_size": 15,
   "by_tank_size": {
    "11-20g": {
     "n": 6,
     "median": 4.0,
     "min": 2,
     "max": 8
    },
    ">40g": {
     "n": 4,
     "median": 4.0,
     "min": 2,
     "max": 6
    },
    "21-40g": {
     "n": 4,
     "median": 3.5,
     "min": 3,
     "max": 6
    },
    "6-10g": {
     "n": 1,
     "median": 6,
     "min": 6,
     "max": 6
    }
   },
   "per_gallon": {
    "median": 0.12,
    "max": 0.6
   }
  },
  "pleco": {
   "species": "pleco",
   "reports_total": 17,
   "reports_with_size": 12,
   "by_tank_size": {
    "11-20g": {
     "n": 2,
     "median": 1.0,
     "min": 1,
     "max": 1
    },
    ">40g": {
     "n": 10,
     "median": 1.0,
     "min": 1,
     "max": 3
    }
   },
   "per_gallon": {
    "median": 0.02,
    "max": 0.05
   }
  },
  "goldfish": {
   "species": "goldfish",
   "reports_total": 15,
   "reports_with_size": 6,
   "by_tank_size": {
    ">40g": {
     "n": 2,
     "median": 3.0,
     "min": 2,
     "max": 4
    },
    "21-40g": {
     "n": 3,
     "median": 4,
     "min": 3,
     "max": 4
    },
    "<=5g": {
     "n": 1,
     "median": 4,
     "min": 4,
     "max": 4
    }
   },
   "per_gallon": {
    "median": 0.1,
    "max": 0.8
   }
  },
  "kuhli loach": {
   "species": "kuhli loach",
   "reports_total": 15,
   "reports_with_size": 11,
   "by_tank_size": {
    "11-20g": {
     "n": 6,
     "median": 6.0,
     "min": 2,
     "max": 13
    },
    "21-40g": {
     "n": 4,
     "median": 6.0,
     "min": 4,
     "max": 7
    },
    ">40g": {
     "n": 1,
     "median": 4,
     "min": 4,
     "max": 4
    }
   },
   "per_gallon": {
    "median": 0.24,
    "max": 0.65
   }
  },
  "betta": {
   "species": "betta",
   "reports_total": 14,
   "reports_with_size": 9,
   "by_tank_size": {
    "<=5g": {
     "n": 3,
     "median": 2,
     "min": 1,
     "max": 2
    },
    "11-20g": {
     "n": 5,
     "median": 1,
     "min": 1,
     "max": 1
    },
    "6-10g": {
     "n": 1,
     "median": 2,
     "min": 2,
     "max": 2
    }
   },
   "per_gallon": {
    "median": 0.05,
    "max": 0.4
   }
  },
  "molly": {
   "species": "molly",
   "reports_total": 8,
   "reports_with_size": 4,
   "by_tank_size": {
    ">40g": {
     "n": 3,
     "median": 4,
     "min": 1,
     "max": 9
    },
    "21-40g": {
     "n": 1,
     "median": 2,
     "min": 2,
     "max": 2
    }
   },
   "per_gallon": {
    "median": 0.06,
    "max": 0.16
   }
  },
  "angelfish": {
   "species": "angelfish",
   "reports_total": 8,
   "reports_with_size": 5,
   "by_tank_size": {
    ">40g": {
     "n": 5,
     "median": 6,
     "min": 1,
     "max": 6
    }
   },
   "per_gallon": {
    "median": 0.08,
    "max": 0.08
   }
  },
  "danio": {
   "species": "danio",
   "reports_total": 7,
   "reports_with_size": 3,
   "by_tank_size": {
    ">40g": {
     "n": 1,
     "median": 18,
     "min": 18,
     "max": 18
    },
    "21-40g": {
     "n": 2,
     "median": 5.5,
     "min": 3,
     "max": 8
    }
   },
   "per_gallon": {
    "median": 0.22,
    "max": 0.24
   }
  },
  "rasbora": {
   "species": "rasbora",
   "reports_total": 6,
   "reports_with_size": 5,
   "by_tank_size": {
    ">40g": {
     "n": 3,
     "median": 12,
     "min": 3,
     "max": 24
    },
    "11-20g": {
     "n": 1,
     "median": 10,
     "min": 10,
     "max": 10
    },
    "6-10g": {
     "n": 1,
     "median": 14,
     "min": 14,
     "max": 14
    }
   },
   "per_gallon": {
    "median": 0.5,
    "max": 1.4
   }
  },
  "white cloud": {
   "species": "white cloud",
   "reports_total": 6,
   "reports_with_size": 6,
   "by_tank_size": {
    "11-20g": {
     "n": 2,
     "median": 4.5,
     "min": 4,
     "max": 5
    },
    "21-40g": {
     "n": 2,
     "median": 8.0,
     "min": 6,
     "max": 10
    },
    "6-10g": {
     "n": 2,
     "median": 5.0,
     "min": 5,
     "max": 5
    }
   },
   "per_gallon": {
    "median": 0.32,
    "max": 0.5
   }
  },
  "platy": {
   "species": "platy",
   "reports_total": 6,
   "reports_with_size": 5,
   "by_tank_size": {
    ">40g": {
     "n": 1,
     "median": 8,
     "min": 8,
     "max": 8
    },
    "6-10g": {
     "n": 1,
     "median": 5,
     "min": 5,
     "max": 5
    },
    "21-40g": {
     "n": 3,
     "median": 8,
     "min": 3,
     "max": 40
    }
   },
   "per_gallon": {
    "median": 0.22,
    "max": 1.33
   }
  },
  "endler": {
   "species": "endler",
   "reports_total": 5,
   "reports_with_size": 4,
   "by_tank_size": {
    "11-20g": {
     "n": 2,
     "median": 2.5,
     "min": 2,
     "max": 3
    },
    ">40g": {
     "n": 1,
     "median": 4,
     "min": 4,
     "max": 4
    },
    "6-10g": {
     "n": 1,
     "median": 2,
     "min": 2,
     "max": 2
    }
   },
   "per_gallon": {
    "median": 0.15,
    "max": 0.2
   }
  }
 }
}