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Discovery stream
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Copepods
Copepods are foundational micro-crustaceans that support biodiversity and provide natural live food in reef tanks. They thrive in stable systems with structure, food, and...
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Gracilaria
Gracilaria is a reef-friendly macroalgae that provides steady nutrient export, pod habitat, and natural food for herbivores without becoming invasive. It grows best with...
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Asterina Starfish
Asterina starfish are common hitchhikers that usually act as harmless algae and biofilm grazers. In balanced tanks they stay in low numbers and do...
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Fromia Starfish
Fromia starfish are beautiful but demanding invertebrates that rely on mature reef surfaces for food. They require large, well-established tanks with abundant biofilm and...
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Sand-Sifting Starfish
Sand-sifting starfish clean sand by consuming the life within it, which makes them one of the most common slow-failure inverts in reef tanks. While...
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Serpent Star
Serpent stars are hardy, reef-safe scavengers that live in rockwork and clean up leftover food before it becomes a nutrient issue. They’re mostly nocturnal...
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Brittle Star
Brittle stars are reef-safe scavengers that live in rockwork and help clean up leftover food before it becomes a nutrient problem. They’re mostly hidden...
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Squamosa Clam
Squamosa clams are one of the more forgiving giant clams, but they still require a stable, mature reef with consistent lighting and chemistry. They...
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Crocea Clam
Crocea clams are high-light, rock-dwelling giant clams that demand stable chemistry and strong, consistent lighting. They’re sensitive to alkalinity swings, poor placement, and system...
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Maxima Clam
Maxima clams are high-light, light-driven clams that do best in mature, stable reef systems. They need strong, consistent lighting, steady alkalinity and calcium, and...
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Derasa Clam
Derasa clams are one of the more forgiving giant clams, but they still require a stable, mature reef with consistent lighting and chemistry. They...
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Collector Urchin
Collector urchins are effective algae grazers with a lot of personality, but they’re mechanically disruptive by nature. They’re reef safe biologically, yet will pick...
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Pencil Urchin
Pencil urchins are strong, opportunistic algae grazers that work best in rugged, well-secured systems. They’re reef safe with caution, not because they eat corals,...
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Longspine Urchin
Longspine urchins are powerful algae grazers best suited for large, well-secured reef tanks. They’re reef safe biologically, but their size, spines, and strength make...
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Tuxedo Urchin
Tuxedo urchins are small, reef-friendly algae grazers that excel at controlling film algae and biofilm in mixed reefs. They’re generally gentle, but will move...
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Pincushion Urchin
Pincushion urchins are small, reef-friendly algae grazers that work well in mixed reefs when given enough food. They’re generally gentle but can knock over...
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Anemone Crab
Anemone crabs are specialized, symbiotic crabs that depend on a healthy host anemone to thrive. They do best in stable, established tanks where food...
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Emerald Crab
Emerald crabs are opportunistic algae grazers that can be very effective when algae is present, especially bubble algae. They’re reef safe with conditions, but...
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Porcelain Crab
Porcelain crabs are peaceful filter feeders that rely on moderate flow and suspended food rather than scavenging. They do best in established reefs with...
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Blue-Leg Hermit Crab
Blue-leg hermits are active, hardy scavengers that help with algae and leftover food, but they’re more aggressive than scarlet hermits. Their biggest downside is...
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Scarlet Hermit Crab
Scarlet hermit crabs are one of the most reef-friendly hermits available, known for grazing algae and biofilm without causing much trouble. They do best...
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Astraea Snail
Astraea snails are reef-safe algae grazers that clean film algae and biofilm from rock and glass. Their main downside is that many can’t flip...
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Cerith Snail
Cerith snails are versatile, reef-safe grazers that work across rock, glass, and sandbed edges, making them one of the most useful cleanup crew snails...
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Turbo Snail
Turbo snails are powerful algae grazers best used as a targeted response when algae needs to be knocked back quickly. They’re reef safe biologically,...
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Nassarius Snail
Nassarius snails are sandbed scavengers that specialize in cleaning up leftover meaty food, not algae. They live buried in the sand and rely on...
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Trochus Snail
Trochus snails are reliable, reef-safe algae grazers that work on both glass and rock without needing constant attention. They’re especially valued for their ability...
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Pistol Shrimp
Pistol shrimp are burrowing engineers that reshape the sandbed, move rubble, and make their presence known with characteristic snapping. They aren’t cleanup crew and...
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Fire Shrimp
Fire (Blood) shrimp are peaceful, reef-safe cleaner shrimp with a more reserved personality than skunk cleaners. They’re naturally shy, often more active in the...
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Skunk Cleaner Shrimp
Skunk cleaner shrimp are hardy, reef-safe scavengers that also happen to clean fish when given the chance. They’re active, visible, and beginner-friendly in stable...
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Peppermint Shrimp
Peppermint shrimp are hardy, opportunistic scavengers that fit well into many reef tanks when expectations are set correctly. They’re mostly nocturnal, tend to stay...
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Banggai Cardinalfish
A peaceful, reef-safe cardinalfish with bold striping and a calm hovering behavior. Great for community reefs, especially smaller tanks, as long as it isn’t...
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Pajama Cardinalfish
A peaceful, reef-safe cardinalfish with a quirky spotted pattern and calm hovering behavior. Easy to feed, beginner-friendly, and often suitable for pairs or small...
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Tailspot Blenny
A tiny, reef-safe fish packed with personality. Best kept singly with plenty of rockwork and perches. Easy to feed and may graze lightly, but...
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Lawnmower Blenny
A classic algae-grazing blenny with big personality. Best in 40+ gallon tanks with mature rockwork and steady grazing opportunities. Supplement with algae-based foods so...
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Six-Line Wrasse
A colorful, energetic wrasse that patrols rockwork all day and is usually easy to feed. Reef safe, but temperament can become aggressive over time—especially...
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Yellow Tang
An iconic reef-safe grazer that adds constant movement and bright color. Best kept in 75+ gallons with plenty of swimming space and daily algae-based...
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Kole Tang
A reef-safe bristletooth tang known for excellent film algae and biofilm grazing. Best kept in 70–75+ gallons with strong filtration, stable conditions, and daily...
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Coral Beauty Angelfish
A colorful, active dwarf angelfish that can be a reef tank centerpiece. Best kept in 55+ gallons with mature rockwork and a varied omnivore...
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Flame Angelfish
A vibrant dwarf angelfish with big personality and strong reef presence. Best kept in 55+ gallons (75+ preferred) with mature rockwork and a varied...
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Midas Blenny
A reef-safe blenny with big personality that often swims in the open like a small schooling fish. Easy to feed and generally community-friendly, but...
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Diamond Watchman Goby
A reef-safe sand-sifting goby that turns over the sand bed and adds constant bottom activity. Best in 40+ gallons with a mature sand bed,...
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Neon Goby
A small, peaceful, reef-safe goby known for occasional cleaner behavior. Great for beginners and community tanks, as long as it isn’t housed with fish...
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Foxface Rabbitfish
A larger, reef-compatible herbivore known for algae grazing and calm cruising behavior. Best in 125+ gallons with strong filtration and daily algae-based feeding. Usually...
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Ocellaris Clownfish
A hardy, reef-safe clownfish that adapts well to home aquariums, the Ocellaris Clownfish is an excellent choice for beginners and experienced reef keepers alike....