{"topic_id":"exotic_aquarium_fish_nutrition","category":"exotic-pet-nutrition","context":"---\ntopic_id: exotic_aquarium_fish_nutrition\ncategory: exotic-pet-nutrition\ntitle: \"Aquarium-fish nutrition — dietary vitamin C deficiency (“broken back”) and iodine deficiency (thyroid hyperplasia)\"\nlang: en\nsource: \"Merck Veterinary Manual — Aquarium-fish nutrition — dietary vitamin C deficiency (“broken back”) and iodine deficiency (thyroid hyperplasia)\"\nsource_file: pdf-raw/exotic-health/mvm_fish_nutrition.txt\ndate_parsed: 2026-07-28\ntokens_estimated: 220\nverified: true\nverification: c1_substring\nsource_document: \"Merck Veterinary Manual (professional veterinary reference)\"\ncitation:\n  authority: \"Merck Veterinary Manual\"\n  title: \"Aquarium-fish nutrition — dietary vitamin C deficiency (“broken back”) and iodine deficiency (thyroid hyperplasia)\"\n  url: \"https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquarium-fish/nutritional-diseases-of-fish\"\n  retrieved: \"2026-07-28\"\n  ref: \"\"\n  doc_type: \"professional veterinary reference\"\n  needs_review: false\n---\n# Aquarium-fish nutrition\n\nThe text below is reproduced verbatim from the first-hand source (Merck Veterinary Manual).\n\n> Inadequate dietary vitamin C can result in a condition called broken back disease by some farmers\n> Iodine deficiency can result in thyroid hyperplasia\n\nSource: `pdf-raw/exotic-health/mvm_fish_nutrition.txt` (first-hand professional veterinary reference, tag-stripped).\n\n## Claims (verified C1 substrings of source_file)\n- `Inadequate dietary vitamin C can result in a condition called broken back disease by some farmers`\n- `Iodine deficiency can result in thyroid hyperplasia`\n","sources":["exotic-pet-nutrition — Aquarium-fish nutrition — dietary vitamin C deficiency (“broken back”) and iodine deficiency (thyroid hyperplasia) (retrieved 2026-07-28)"],"source":{"authority":"exotic-pet-nutrition","title":"Aquarium-fish nutrition — dietary vitamin C deficiency (“broken back”) and iodine deficiency (thyroid hyperplasia)","url":"https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquarium-fish/nutritional-diseases-of-fish","retrieved":"2026-07-28","ref":"","doc_type":"official PDF","source_document":"Merck Veterinary Manual (professional veterinary reference)","verification_file":"pdf-raw/exotic-health/mvm_fish_nutrition.txt"},"source_document":"Merck Veterinary Manual (professional veterinary reference)","source_file":"pdf-raw/exotic-health/mvm_fish_nutrition.txt","tokens_estimated":220,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}