🐟 Green Spotted Pufferfish (Dichotomyctere nigroviridis)
Brackish-to-Marine Predator • Genuinely Needs Rising Salinity With Age • Not Reef Safe
 
⚠️ Please Read First
This species is genuinely often sold without proper explanation of its changing needs. Juveniles do well in low-end brackish water, but adults genuinely fail to thrive long-term in pure freshwater and need rising salinity as they mature. Most sources recommend eventually moving toward full marine conditions, though some experienced keepers genuinely find that stable, higher-end brackish conditions produce equally healthy, long-lived fish without going fully marine — there's genuine, ongoing debate on this point among experienced keepers.
A genuinely important practical note: don't try to raise salinity gradually in an already-established freshwater tank — this transition commonly fails and the fish often don't survive it. The safer approach is to set up and fully cycle a new tank at your target salinity first, then drip-acclimate the puffer into it directly.
 
📋 The Green Spotted Pufferfish is a vibrant, genuinely intelligent oddball fish with a bright green back covered in dark spots and a white belly, well known for recognizing its keeper and showing real personality. It has a powerful beak for crushing snails, crabs, and shellfish, and genuinely needs hard-shelled foods regularly to prevent its teeth from overgrowing. It's genuinely not reef safe — while its water chemistry needs can technically overlap with a reef tank, it will nip, chew, and destroy corals, and older individuals genuinely become more aggressive with age.
 
💡 Highlights
✨ Bright Green-and-Black Spotted Pattern: A striking, instantly recognisable oddball
⚠️ Genuinely Needs Rising Salinity: Pure freshwater is harmful for adults
📏 Grows to About 15-17cm: Needs a genuinely large aquarium
🧠 Intelligent and Interactive: Genuinely recognizes its keeper
🪸 Not Reef Safe: Will damage corals and invertebrates