Nautilus and Co. | Premium Aquarium Supplies

Explore the Deep

Premium aquarium supplies for the dedicated aquarist.

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Featured products

Small Desktop Fish Tank with Back Filter | Self-Circulating Mini Aquarium for Goldfish & Tropical Fish

Fish tank with plants and fish on a blue background

Small aquarium with a silent water pump on a nightstand, glowing blue.

Diagram of an aquarium filter system with labeled components on a blue background

Three small aquariums with fish and decorations on a blue background

Black back filter fish tank with product details and included items on a blue background

White back filter fish tank with specifications and included items on a blue background

Display of different brightness levels with colorful backgrounds and text on a blue background.

Sale

Small Desktop Fish Tank with Back Filter | Self-Circulating Mini Aquarium for Goldfish & Tropical Fish

$64.99

Sale price $64.99 Regular price $79.99

Aquarium CO2 Diffuser | Bubble Reactor Atomizer for Planted Tanks

Clear outdoor shower head on grass with dark background

Clear aquarium filter with bubbles and a fish swimming in the background

Clear plastic device with a hose on a wooden surface

Two clear plastic bottles with white caps on a green background

Product details of a suction cup fixture with features listed.

Large diffuser with measurements and additional components on a white background

Small diffuser with measurements and additional components on a white background

Sale

Aquarium CO2 Diffuser | Bubble Reactor Atomizer for Planted Tanks

$15.99

Sale price $15.99 Regular price $19.99

Betta Fish Tunnel Hideout | Silicone Aquarium Cave for Bettas, Guppies & Shrimp

Two red cylindrical fish tanks with a lattice cutout design, shown in an aquarium setting with a live betta fish swimming through the top one and a coral stand supporting the bottom one.

A bright pink cylindrical mesh filter or skimmer basket floating in an aquarium filled with yellow aquatic plants and small fish.

Pink plastic tube with cutout design in an aquarium with colorful betta fish.

Pink cylindrical plastic fish tank cleaner with clear suction cups, shown above a fish tank scene with fish and plants, plus three circular detail insets with text about dirt resistance, suction power, and anti-fall snap-on design.

Pink lattice fish tunnel aquarium decor with dimensions — 10cm/3.93in length, 4cm/1.57in diameter

Sale

Betta Fish Tunnel Hideout | Silicone Aquarium Cave for Bettas, Guppies & Shrimp

$11.99

Sale price $11.99 Regular price $14.99

Mossy Rock Hiding Cave Aquarium Ornament | Shrimp & Fish Shelter for Aquascape Tanks

Decorative aquarium rock with green moss and goldfish swimming around

A decorative artificial aquarium hide shaped like a mossy rock with multiple hollow chambers, featuring bright green moss texture and dark gray stone-like openings.

Decorative aquarium rock structure with green moss on a white background

Decorative aquarium rock with green moss and dark gray texture on a white background

Decorative aquarium plant with green moss and black base on a white background

Sale

Mossy Rock Hiding Cave Aquarium Ornament | Shrimp & Fish Shelter for Aquascape Tanks

$19.99

Sale price $19.99 Regular price $26.99

Volcano Bubble Stone Fish Tank Decoration | Aquarium Ornament with Oxygen Bubble Effect

Aquarium with fish, plants, and a stone with air bubbles.

Close-up of a textured rock with a blue sky and clouds in the background

Goldfish swimming near a rock in an aquarium with water droplets on the glass.

Decorative aquarium rock with inset showing underwater scene with fish and coral

Decorative aquarium rock with a central hole on a white background

Sale

Volcano Bubble Stone Fish Tank Decoration | Aquarium Ornament with Oxygen Bubble Effect

$14.99

Sale price $14.99 Regular price $19.99

Fishing Cat Aquarium Ornament | Resin Fish Tank Figurine | 6 Styles

Two small dog figurines playing guitar and drums on a reflective surface with plants in the background.

Three miniature cat figurines sitting on a branch with a blurred natural background

Cat figurine on a wooden perch over a bowl with food and plants

Decorative figurine of a cat fishing in a small pond with plants and rocks.

Miniature pond with decorative elements including a log, small figurines, and plants.

Black cat figurine with a string toy on a white background

Plush toy of a cat climbing a branch with a red ball on a white background

Cat-shaped toy with a dangling red ball on a white background

Cat toy resembling a cat playing with a branch and red ball on a white background

Cat figurine with a fishing rod and fish on a white background

Cat figurine with a branch and red ball on a white background

Sale

Fishing Cat Aquarium Ornament | Resin Fish Tank Figurine | 6 Styles

$12.99

Sale price $12.99 Regular price $16.99

Realistic Stone Reptile Feeding & Water Bowl | Safe for Bearded Dragons & Small Reptiles

Two stone-like bowls and a green lizard on a white background

Premium reptile rock dish showing dual use — round feeding bowl filled with food pellets and flat water bowl, with chameleon, white background

Hand holding a textured stone bowl against a white background

Lizard in a terrarium with food and water bowls

Rectangular stone-like object with dimensions and weight displayed

Decorative stone bowl with measurements and weight displayed

Sale

Realistic Stone Reptile Feeding & Water Bowl | Safe for Bearded Dragons & Small Reptiles

$19.99

Sale price $19.99 Regular price $24.99

Transparent Desktop Aquarium | Rectangular Fish Tank for Home & Office Decor

Clear fish tank with goldfish and plants on a wooden surface, text 'High-definition PET non-toxic and harmless' above.

Fish tank with colorful fish on a table by a large window with a view of the ocean.

Fish tank with fish and plants on a table, text 'Thickened material Sturdy and durable' above.

Clear fish tank with fish and plants on a wooden surface, showing measurements.

Tortoise tank with a turtle, plants, and rocks on a wooden floor.

Sale

Transparent Desktop Aquarium | Rectangular Fish Tank for Home & Office Decor

$44.99

Sale price $44.99 Regular price $54.99

Mini USB Aquarium Air Pump | Silent 1W with Air Stone | 4 Colors

Aquarium air pump with hoses on a blue background

Four colorful power adapters with USB cables on a blue background

Black aquarium pump with clear tubes on a blue background

Blue USB device with black cable on a white background, showing dimensions.

Double tube stone water pump USB plug on a blue background

Double tube stone water pump with USB plug on a blue background

Blue electronic device with a USB cable on a white background

Sale

Mini USB Aquarium Air Pump | Silent 1W with Air Stone | 4 Colors

$19.99

Sale price $19.99 Regular price $24.99

TIDNNS Portable Battery Aquarium Air Pump | USB Rechargeable with Auto Power-Outage Backup | NAUTILUS AND CO.

Aquarium air pump with accessories on a background of an aquarium scene, featuring TIDNNS branding.

A person lying in bed with a large aquarium in the background, emphasizing quiet operation.

TIDNNS TD-300 aquarium air pump features: up to 185H runtime, waterproof design, power-off self-starting, intermittent mode, charge-use separation, AI chip, LED power display, metal buckle

Aquarium with fish and intermittent oxygen supply device on a black background

A white rectangular electronic device with a black control panel and green indicator lights, shown on a light gray background with product specs and icons. The text reads 'TD-100A With Internim Mode & Hook Clip' and lists power, air volume, battery, and waterproof details.

White TD-200 dual-output portable power station with a digital control panel, shown alongside key specifications and features on a white background.

A white TIDNNS TD-300 portable power station with a digital display showing green battery bars, set against a clean white background with product specifications and feature icons printed on the left.

White electronic device with specifications displayed on a blue background

Sale

TIDNNS Portable Battery Aquarium Air Pump | USB Rechargeable with Auto Power-Outage Backup | NAUTILUS AND CO.

$44.99

Sale price $44.99 Regular price $54.99

Adjustable Submersible Aquarium Heater | 25W–300W Thermostat Heating Rod for Fish Tanks | NAUTILUS AND CO.

Aquarium heater with a red fish in water

Submersible aquarium heater with US plug — clear glass tube, adjustable temperature dial, and black suction cup clips on white background

Black and red measuring device on a white background

Metallic hose with textured surface on a white background

Aquarium heater with coiled element on a white background

Aquarium heater with specifications on a white background

Water heater element with specifications on a white background

Tubular light fixture with specifications on a white background

Tank heater with specifications on a white background

Sale

Adjustable Submersible Aquarium Heater | 25W–300W Thermostat Heating Rod for Fish Tanks | NAUTILUS AND CO.

$39.99

Sale price $39.99 Regular price $49.99

Aquarium Fish Breeder & Isolation Box | Betta Breeding Incubator for Baby Fish & Shrimp | NAUTILUS AND CO.

Two clear plastic crates stacked on a white background

Clear fish tank hatching isolation box with green plants in the background

Clear double-layer detachable design with text on a black background

A transparent acrylic fish tank with a double-layer detachable design, shown on a dark teal background with marketing text highlighting easy top feeding, transparency, and monitoring.

Aquarium filter with text on 1mm pore safety isolation and water flow circulation.

Small incubation box with labeled parts and dimensions on a black background

Large incubation box with labeled parts and dimensions on a black background

Sale

Aquarium Fish Breeder & Isolation Box | Betta Breeding Incubator for Baby Fish & Shrimp | NAUTILUS AND CO.

$16.99

Sale price $16.99 Regular price $21.99

Ultra-Quiet Submersible Water Pump | 3W–25W Aquarium Fountain Pump for Fish Tanks & Ponds | NAUTILUS AND CO.

Blue and black water pump with water splashing around it on a white background

Submersible water pump size and spec comparison chart — EB-301 (3W), EB-302 (6W), EB-303 (10W), EB-304 (15W), EB-305 (25W) — all 110V/60Hz

EB-301 water pump with dimensions and specifications on a white background

Turquoise and black pump with dimensions and specifications on a white background

EB-303 submersible water pump spec sheet — 10W, 110V/60Hz, 1.2m max head, 600L/H flow rate, dimensions 4.5×7×5.7cm, includes 13mm and 8.5mm fittings

EB-304 submersible water pump spec sheet — 15W, 110V/60Hz, 1.6m max head, 800L/H flow rate, dimensions 5.5×8×6.8cm, includes 13mm and 8.5mm fittings

EB-305 submersible water pump spec sheet — 25W, 110V/60Hz, 2.0m max head, 1200L/H flow rate, dimensions 6.5×10×7.5cm, includes 16mm and 19mm fittings

Teal and black pump with highlighted features on a white background

Pump used for water features in a garden with a pond and waterfall.

Turquoise and black suction cup device with text 'High Quality Suction Cups' on a white background

Sale

Ultra-Quiet Submersible Water Pump | 3W–25W Aquarium Fountain Pump for Fish Tanks & Ponds | NAUTILUS AND CO.

$79.99

Sale price $79.99 Regular price $99.99

USB Mini Aquarium Heater | 10W Submersible Constant Temperature Heating Rod for Small Fish Tanks | NAUTILUS AND CO.

Black electronic device with USB cable on a white background

Black electronic device with measurements on a white background

Small fish tank heating rod held between fingers with text indicating 26°C constant temperature.

Mini USB heater with specifications on a white background

USB power adapter with charging interface and plug on a white background

10W USB mini heating rod for small fish tanks with specifications on a white background

Sale

USB Mini Aquarium Heater | 10W Submersible Constant Temperature Heating Rod for Small Fish Tanks | NAUTILUS AND CO.

$19.99

Sale price $19.99 Regular price $24.99

Ceramic Aquarium Feeding Dish | Anti-Escape Food & Water Bowl for Fish & Shrimp | NAUTILUS AND CO.

Set of white ceramic bearings on a black background

Set of white ceramic bowls on a dark background with a lizard and worm illustration.

Three white cylindrical containers with measurements labeled on a white background

Lizard next to a small white container with a worm on a natural background

Three white ceramic bowls of different sizes on a black background

Sale

Ceramic Aquarium Feeding Dish | Anti-Escape Food & Water Bowl for Fish & Shrimp | NAUTILUS AND CO.

$12.99

Sale price $12.99 Regular price $16.99

Stainless Steel Aquarium Fishing Net | Extendable Handle, Square & Round | NAUTILUS AND CO.

Metallic fish net捞 with extendable handle on a white background

Hand holding a butterfly net against a black background

White square small and large fishing net on a black background

Round large and small fishing net on a black background

White square fishing net with measurements on a black background

Two square fishing nets with metal handles and chain loops on a white background, labeled with dimensions and the text 'Set 2 Small size+large size square fishing net'.

Two round expandable fishing nets with metal handles and chain loops on a white background, with text showing sizes and dimensions for small and large versions.

Sale

Stainless Steel Aquarium Fishing Net | Extendable Handle, Square & Round | NAUTILUS AND CO.

$13.99

Sale price $13.99 Regular price $17.99

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Explore the Deep

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Featured products

Small Desktop Fish Tank with Back Filter | Self-Circulating Mini Aquarium for Goldfish & Tropical Fish

Small Desktop Fish Tank with Back Filter | Self-Circulating Mini Aquarium for Goldfish & Tropical Fish

Aquarium CO2 Diffuser | Bubble Reactor Atomizer for Planted Tanks

Aquarium CO2 Diffuser | Bubble Reactor Atomizer for Planted Tanks

Betta Fish Tunnel Hideout | Silicone Aquarium Cave for Bettas, Guppies & Shrimp

Betta Fish Tunnel Hideout | Silicone Aquarium Cave for Bettas, Guppies & Shrimp

Mossy Rock Hiding Cave Aquarium Ornament | Shrimp & Fish Shelter for Aquascape Tanks

Mossy Rock Hiding Cave Aquarium Ornament | Shrimp & Fish Shelter for Aquascape Tanks

Volcano Bubble Stone Fish Tank Decoration | Aquarium Ornament with Oxygen Bubble Effect

Volcano Bubble Stone Fish Tank Decoration | Aquarium Ornament with Oxygen Bubble Effect

Fishing Cat Aquarium Ornament | Resin Fish Tank Figurine | 6 Styles

Fishing Cat Aquarium Ornament | Resin Fish Tank Figurine | 6 Styles

Realistic Stone Reptile Feeding & Water Bowl | Safe for Bearded Dragons & Small Reptiles

Realistic Stone Reptile Feeding & Water Bowl | Safe for Bearded Dragons & Small Reptiles

Transparent Desktop Aquarium | Rectangular Fish Tank for Home & Office Decor

Transparent Desktop Aquarium | Rectangular Fish Tank for Home & Office Decor

Mini USB Aquarium Air Pump | Silent 1W with Air Stone | 4 Colors

Mini USB Aquarium Air Pump | Silent 1W with Air Stone | 4 Colors

TIDNNS Portable Battery Aquarium Air Pump | USB Rechargeable with Auto Power-Outage Backup | NAUTILUS AND CO.

TIDNNS Portable Battery Aquarium Air Pump | USB Rechargeable with Auto Power-Outage Backup | NAUTILUS AND CO.

Adjustable Submersible Aquarium Heater | 25W–300W Thermostat Heating Rod for Fish Tanks | NAUTILUS AND CO.

Adjustable Submersible Aquarium Heater | 25W–300W Thermostat Heating Rod for Fish Tanks | NAUTILUS AND CO.

Aquarium Fish Breeder & Isolation Box | Betta Breeding Incubator for Baby Fish & Shrimp | NAUTILUS AND CO.

Aquarium Fish Breeder & Isolation Box | Betta Breeding Incubator for Baby Fish & Shrimp | NAUTILUS AND CO.

Ultra-Quiet Submersible Water Pump | 3W–25W Aquarium Fountain Pump for Fish Tanks & Ponds | NAUTILUS AND CO.

Ultra-Quiet Submersible Water Pump | 3W–25W Aquarium Fountain Pump for Fish Tanks & Ponds | NAUTILUS AND CO.

USB Mini Aquarium Heater | 10W Submersible Constant Temperature Heating Rod for Small Fish Tanks | NAUTILUS AND CO.

USB Mini Aquarium Heater | 10W Submersible Constant Temperature Heating Rod for Small Fish Tanks | NAUTILUS AND CO.

Ceramic Aquarium Feeding Dish | Anti-Escape Food & Water Bowl for Fish & Shrimp | NAUTILUS AND CO.

Ceramic Aquarium Feeding Dish | Anti-Escape Food & Water Bowl for Fish & Shrimp | NAUTILUS AND CO.

Stainless Steel Aquarium Fishing Net | Extendable Handle, Square & Round | NAUTILUS AND CO.

Stainless Steel Aquarium Fishing Net | Extendable Handle, Square & Round | NAUTILUS AND CO.

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