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We offer one of the largest selections of freshwater and saltwater fish in Philadelphia. Check out our videos.

Tropic Marin Salt Back In Stock #thehiddenreef #tropicmarin ... See MoreSee Less

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Gold Heart Trigger #thehiddenreef #goldhearttrigger ... See MoreSee Less

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19 hours ago

The Hidden Reef, Inc

Red Sea Reefer Tanks are in. Great X Mas Gifts #reefernano #reefer250 #reefer350 #reefer425xl #reefer300xl #redseaaquarium #redseapharm #thehiddenreef ... See MoreSee Less

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Annularis Angel - Pomacanthus annularis
Blacktail Lemonpeel: Hyb Super - Centropyge flavissima x v
Imperator Angel: Juv - Pomacanthus imperator
Swalesi Basslet - Liopropoma swalesi
Bicolor Blenny: Male - Ecsenius bicolor
Lawnmower Blenny - Salarias fasciatus
Scooter Blenny - Synchiropus ocellatus
Two Spot Blenny - Ecsenius bimaculatus
Black Boxfish (Female) - Ostracion meleagris
Orbic (Pajama) Cardinal - Sphaeramia nematoptera
Red Spot Glass Cardinal - Apogon parvulus
Blue Damsel - Pomacentrus coelestis
Domino Damsel - Dascyllus trimaculatus
Electric Blue Damsel - Pomacentrus coelestis
Snowflake Damsel; Haw. - Dascyllus albisella
Springeri Damsel - Chrysiptera springeri
Yellowtail Blue Damsel - Chrysiptera sp.
Aiptasia Eating File - Acreichthys tomentosus
Yellow Goatfish; Fiji - Parupeneus cyclostomus
Bella Goby - Valenciennea bella
Blue Gudgeon Goby - Ptereleotris heteroptera
Blue Spot Watchman Goby - Cryptocentrus pavoninoides
Circus Goby - Priolepis nocturna
Dragon Goby - Amblygobius phaleana
Green Mandarin Goby - Synchiropus splendidus
Grn War Paint Clown Goby - Gobiodon histrio
Twinspot (Signal) Goby - Signigobius biocellatus
Watchman Goby (Pink/Blue Spot) - Cryptocentrus leptocepha
Yellow Watchman - Cryptocentrus cinctus
Diadema Pseudochromis - Pseudochromis diadema
Rainbow Pseudochromis - Pseudochromis sp.
Dogface Puffer - Arothron nigropunctatus
Stars & Stripes Puffer - Arothron hispidus
Valentini Puffer - Canthigaster valentini
Fiji Foxface; Fiji - Siganus uspi
Spotted Sweetlips - Plectorhinchus chaetodonoides
Blonde Naso Tang - Naso elegans
Blue (Hippo) Tang - Paracanthurus hepatus
Blue Eye Tang - Ctenochaetus binotatus
Flame Fin (Tomini) Tang - Ctenochaetus tominiensis
Mata Tang - Acanthurus mata
Naso Tang - Naso lituratus
Sailfin Tang - Zebrasoma veliferum
Spotted Yellow Eye Tang; I.O - Ctenochaetus strigosus
Christmas Wrasse; Indo Pacific - Halichoeres sp.
Dragon Wrasse: Juv - Novaculichthys taeniourus
Green Coris Wrasse - Halichoeres chloroptereus
Hardwicki Wrasse - Thalassoma hardwicki
Melanarus Wrasse: Female; Fiji - Halichoeres malanurus
Ornate Leopard Wrasse - Macropharyngodon ornatus
Red Coris Wrasse: Juv. - Coris gaimard
Anemone Hermit Crab - Dardanus pedunculatus
Coral Banded Shrimp - Stenopus hispidus
Bumble Bee Snail - Engina sp.
Cerith Snail - Cerith sp.
Nassarius Sand Snail (Small) Nassarius sp.
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Angels:Flagfin :: Eastern Asia
Angels:Flame Loriculus :: Central Pacific
Angels:Half Black :: Eastern Asia
Angels:Asfur :: Africa / Red Sea
Angels:Maculosus Sub-Adult/Changing :: Africa / Red Sea
Angels:Regal :: Eastern Asia
Angels MAC Certified:Bicolor :: Fiji
Angels MAC Certified:Coral Beauty :: Fiji
Angels MAC Certified:Lemon Peel Juvenile Blue Spot :: Fiji
Anthias:Squareback Female :: Central Pacific
Anthias:Squareback Male :: Eastern Asia
Anthias MAC Certified:Lyretail Orange Female :: Fiji
Blennies:Spotted, Orange :: South Asia
Blennies:Midas :: South Asia
Blennies MAC Certified:Canary :: Fiji
Butterflies:Copperband :: Eastern Asia
Butterflies MAC Certified:Auriga :: Fiji
Butterflies MAC Certified:Saddleback :: Fiji
Cardinals Aquacultured:Kaudern's, Banggai :: South Asia
Damsels:Sergeant Major :: Eastern Asia
Damsels:Chromis, Green :: Eastern Asia
Damsels:Blue Velvet :: Eastern Asia
Damsels:Blue Velvet :: Eastern Asia
Damsels MAC Certified:Fiji Blue Devil :: Fiji
Damsels MAC Certified:Domino Gold :: Fiji
Dottyback:Red Spotted, Male :: Eastern Asia
Dottyback:Red Serosa :: Eastern Asia
Filefish:Wire Netting Leather Jacket :: Eastern Asia
Gobies:Clown, Black :: Eastern Asia
Gobies:Clown, Black :: Eastern Asia
Gobies:Watchman Diamond :: South Asia
Gobies MAC Certified:Sleeper Golden Head :: Fiji
Groupers:Soap Fish, Golden 6 Line :: South Asia
Groupers:Red Louti :: Eastern Asia
Hawks:Long Nose :: Eastern Asia
Hawks MAC Certified:Falco :: Fiji
Hawks MAC Certified:Pixie :: Fiji
Hogs:Red Diana Juvenile :: Eastern Asia
Rabbitfish:Foxface, One Spot :: Eastern Asia
Rabbitfish:Spinefoot, Two Bar :: Eastern Asia
Rabbitfish MAC Certified:Yellow Blotch :: Fiji
Snappers:Scolopsis Yellow :: Eastern Asia
Tangs:Mimic, Half Black :: Eastern Asia
Tangs:White Cheek :: Central Pacific
Tangs:Scopas :: Eastern Asia
Tangs:Scopas :: Eastern Asia
Triggers:Pinktail :: Eastern Asia
Triggers:Red-Toothed :: Eastern Asia
Triggers:Humu, Picasso :: South Asia
Triggers:Humu, Rectangle :: South Asia
Triggers:Sickle :: Eastern Asia
Wrasses:Blue Throat Sailfin Fairy :: Eastern Asia
Wrasses:Lunatus Crescent Tail Fairy Male :: Eastern Asia
Wrasses:Red Coris Adult :: Eastern Asia
Wrasses:Cleaner Common :: Eastern Asia
Wrasses:Bluehead Male :: East Americas
Wrasses:Pinkface / Fivestripe :: South Asia
Wrasses MAC Certified:Exquisite :: Fiji
Wrasses MAC Certified:Leopard Black :: Fiji
Wrasses MAC Certified:Six Line :: Fiji
Crabs, Hermit:Red Tip :: West Americas
Jellyfish:Upside Down :: East Americas
Shell, Snails:Turbo :: West Americas
Shrimps:Blood / Fire :: South Asia
Shrimps:Cleaner / Scarlet Skunk :: South Asia
Shrimps:Camel :: South Asia
Stars:Pillow :: Eastern Asia
Stars:Blue Linckia :: Central Pacific
Stars:Orange Linckia :: South Asia
Stars:Brittle :: East Americas
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AMBULIA (Limnophila indica)
IMPORTED ANACHARIS (Egeria densa)
NARROW LEAF ANACHARIS (Egeria najas)
GOLDEN LLOYDIELLA (Lysimachia nummularia)
MEXICAN OAK LEAF (Shinnersia rivularis)s
GREEN MYRIO (Myriophyllum pinnatum)
ROTALA MACRANDRA (Rotala macrandra)
ROTALA NANJENSHAN (Rotala nanjenshan)
TELANTHERA (Alternanthera reineckii var
NARROW LEAF CHAIN SWORD (Echinodorus lenel
GOLDEN MELON SWORD SM (Echinodorus osiris)
PINWHEEL MELON SWORD MD (Echinodorus osiri
RED FLAME SWORD SM (Echinodorus Red Flame'
VESUVIUS MD (Echinodorus angustifolia 'Ves)
CRYPT SPIRALIS MD (Cryptocoryne spiralis)
BRONZE WENDTII MD (Cryptocoryne wendtii Tropi
CORKSCREW VAL(Vallisneria americana var biwae
ITALIAN VAL(Vallisneria spiralis)
JUNGLE VAL (Vallisneria americana var americana
DWARF SUBULATA BUNCH (Sagitlaria subulata)
BANANA PLANT (Nymphoides aquatica)spp
JAVA FERN (Microsorium pteropus)
MONDO GRASS (Ophiopogon japonica)
MOSS BALLS (Cladophora aegagropila)
C. LUTEA POT (Cryptocoryne lulea)
C. PARVA POT (Cryptocoryne parva)
C. UNDULATA POT (Cryptocoryne undulata)
C. RED WENDTII POT (Cryptocoryne wendtii)
GLOSSOSTIGMA POT (Glossostigma elalinoides)
GIANT HAIRGRASS POT (Eleocharis monlevides)
HYDROCOTYLE SP JAPAN POT (Hydrocotyle Iripa
HYGRO 'COMPACT' POT (Hygrophila corymbosa)
MICRANTHEMUM MONTE CARLO POT(Micranthe
STAUROGYNE POTTED (Staurogyne repens)
WISTERIA POT (Hygrophila difformis)
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1 week ago

The Hidden Reef, Inc

The Hidden Reef ... See MoreSee Less

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1 week ago

The Hidden Reef, Inc

Pagoda Snails #pagodas ails #thehiddenreef ... See MoreSee Less

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1 week ago

The Hidden Reef, Inc

Electric Blue Veil Angel #electricblueveilangel #angelfish #blueveilangel #thehiddenreef ... See MoreSee Less

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Anemones:Sebae White w/Blue-Tip :: Eastern Asia
Angels MAC Certified:Bicolor :: Fiji
Angels MAC Certified:Lemon Peel :: Fiji
Angels:Flagfin :: Eastern Asia
Angels:Imperator Juvenile :: Eastern Asia
Anthias:Dispar :: Eastern Asia
Anthias:Lyretail Orange Female :: South Asia
Anthias:Lyretail, Red Male Yellow Breast :: South Asia
Basslets:Blue Striped Sand Perch :: East Americas
Basslets:Royal Gramma :: East Americas
Basslets:Tobacco :: East Americas
Blennies:Black Comb-Tooth :: Eastern Asia
Blennies:Canary, Green :: Central Pacific
Blennies:Midas :: South Asia
Blennies:Rippled Rockskipper :: Australia / Coral Sea
Butterflies:Heniochus, Black & White :: Eastern Asia
Butterflies:Raccoon :: Eastern Asia
Cardinals:Orange Lined :: Central Pacific
Corals Soft Aquacultured:Flower, Blood Red, Nano :: Eastern Asia
Corals Soft:Toadstool Leather Green Polyp :: Central Pacific
Corals, LPS Aquacultured:Alveopora, Branch :: Eastern Asia
Corals, LPS:Brain Crater Green :: Australia / Coral Sea
Corals, LPS:Brain Favia :: Central Pacific
Corals, LPS:Brain Open Red :: Central Pacific
Corals, LPS:Brain Red War Coral :: Australia / Coral Sea
Corals, LPS:Chalice Colored :: Central Pacific
Corals, LPS:Elegant, Pink/Purple Tip :: Australia / Coral Sea
Corals, LPS:Elegant, Pink/Purple Tip :: Australia / Coral Sea
Corals, LPS:Flower Pot Long Polyp Green :: Eastern Asia
Corals, LPS:Maze Green :: Central Pacific
Corals, LPS:Moon Brain, Green Eye :: Central Pacific
Corals, LPS:Pipe Organ Green :: Central Pacific
Corals, LPS:Plate Neon Orange :: Australia / Coral Sea
Corals, LPS:Plate Purple & White w/Green Polyps "Pinwheel" :: Australia / Coral Sea
Corals, LPS:Plate Solid Green Short Tentacle :: Australia / Coral Sea
Corals, SPS:Acropora, Ultra Colored :: Central Pacific
Corals, SPS:Birdnest, Red/Pink w/Yellow Tips :: Central Pacific
Corals, SPS:Encrusting, Purple :: Central Pacific
Crabs:Emerald :: East Americas
Damsels MAC Certified:3 - Stripe :: Fiji
Damsels MAC Certified:Fiji Blue Devil :: Fiji
Damsels:Black Cap :: Eastern Asia
Damsels:Blue Velvet :: Eastern Asia
Damsels:Neon Blue :: Eastern Asia
Damsels:Neon Blue :: Eastern Asia
Featherdusters:Dwarf, Pink :: Eastern Asia
Filefish:Redtail :: Eastern Asia
Flounders:Assorted :: East Americas
Gobies:Clown, Citron :: Central Pacific
Gobies:Engineer :: Eastern Asia
Gobies:Firefish Purple :: Eastern Asia
Gobies:Flagtail Pinkbar :: Eastern Asia
Gobies:Watchman, True Yellow :: Eastern Asia
Hawks MAC Certified:Falco :: Fiji
Hawks:Long Nose :: South Asia
Hogs:Coral Spotted Axillaris :: Eastern Asia
Moorish Idols:Moorish Idol :: Central Pacific
Pipefish:Dragonface :: Eastern Asia
Polyps, Button/Zoanthid:Pink Button :: Eastern Asia
Porkfish:Porkfish :: East Americas
Rabbitfish:Barhead Spinefoot :: Eastern Asia
Rabbitfish:Barhead Spinefoot :: Eastern Asia
Rabbitfish:Foxface, Bicolor :: Central Pacific
Shell, Aquacultured Clams:Derasa, Striped w/Blue Rim :: Central Pacific
Snappers:Blue Stripe :: Eastern Asia
Snappers:Checkered :: Eastern Asia
Stars:Brittle :: East Americas
Tangs MAC Certified:Convict :: Fiji
Tangs MAC Certified:Scopas :: Fiji
Tangs:Bristletooth, Tomini :: Eastern Asia
Tangs:Naso :: Eastern Asia
Tangs:Powder Blue :: South Asia
Tangs:Powder Brown :: Eastern Asia
Tangs:Sailfin :: Central Pacific
Tangs:Scopas :: Eastern Asia
Tangs:Scopas :: Eastern Asia
Tangs:Scopas :: Eastern Asia
Toadfish:Toadfish, Colored:: East Americas
Triggers:Humu, Rectangle :: South Asia
Wrasses MAC Certified:Exquisite :: Fiji
Wrasses MAC Certified:Leopard :: Fiji
Wrasses MAC Certified:Six Line :: Fiji
Wrasses:Carpenter's :: Eastern Asia
Wrasses:Cleaner Common :: Eastern Asia
Wrasses:Dragon :: Eastern Asia
Wrasses:Four Line :: Central Pacific
Wrasses:Girdled Fairy Male :: Central Pacific
Wrasses:Lunatus Crescent Tail Fairy Male :: Eastern Asia
Wrasses:Paddlefin :: West Americas
Wrasses:Tusk, Harlequin :: Australia / Coral Sea
Wrasses:Yellow Flanked Fairy :: Eastern Asia
African Starfish: Red; I.O. - Protoreaster linckii
Aiptasia Eating File - Acreichthys tomentosus
Assasi Trigger; Red Sea - Rhinecanthus assasi
Astrea Snail; Atl Lithopoma tectum
Blue (Hippo) Tang - Paracanthurus hepatus
Blue (Hippo) Tang; Fiji - Paracanthurus hepatus
Blue Leg Reef Hermit Crab; Atl. Paguristes sp.
Blue Spot Puffer; Fiji - Canthigaster solandri
Brain Coral: Met. Stripe ; Australia - Trachyphyllia geoffroyi
Brain Coral: Metallic ; Australia - Trachyphyllia geoffroyi
Bubble Anem: Color Purple Base - Entacmaea quadricolor
California Stingray - Urobatis halleri
Chocolate (Yel.Mimic) Tang - Acanthurus pyroferus
Christmas Wrasse; Indo Pacific - Halichoeres sp.
Colony Rock: Bam Bam - Zooanthid sp.
Condylactis Anemone: Color; Atl. - Condylactis gigantea
Coral Beauty Angel; Fiji - Centropyge bispinosus
Crown Leather: Green - Lobophytum sp. w/ Scleractinia
Diadema Pseudochromis - Pseudochromis diadema
Diamond (Sleeper) Goby - Valenciennea puellaris
Domino Damsel - Dascyllus trimaculatus
Dwarf Lion - Dendrochirus zebra
Fiji Foxface; Fiji - Siganus uspi
Finger Leather: Hard Green - Sinularia sp. w/scleractinia
Flame Fin (Tomini) Tang - Ctenochaetus tominiensis
Golden Head Goby - Valenciennea strigata
Green Chromis - Chromis viridis
Green Mandarin Goby - Synchiropus splendidus
Green Scat
Katherine's Fairy Wrasse: Male - Cirrhilabrus katherinae
Longjaw Wrasse: Red - Cheilinus sp.
Marine Betta - Calloplesiops altevelis
Melanarus Wrasse: Female; Fiji - Halichoeres malanurus
Mono Fish; I.O. - Monodactylus argenteu
Mono Fish; I.O. - Monodactylus argenteu
Naso Tang - Naso lituratus
Naso Tang; Haw. - Naso lituratus
Nassarius Sand Snail (Small) Nassarius sp.
Niger Trigger - Odonus niger
Orange Banded Prawn Goby - Amblyeleotris steinitzi
Orbic (Pajama) Cardinal - Sphaeramia nematoptera
Orbiculate Batfish - Platax orbicularis
Ornate Leopard Wrasse - Macropharyngodon ornatus
Pintail Fairy Wrasse; Male - Cirrhilabrus cf. lanceolatus
Pistol Shrimp: Candy Stripe - Alpheus sp.
Powder Brown Surgeon - Acanthurus japonicus
Red Coris Wrasse - Coris gaimard
Red Sea Cleaner Wrasse - Larabicus quadrilineatus
Ruby Red Dragonette - Synchiropus stellatus
Sailfin Fairy Wrasse; Male - Cirrhilabrus sp
Sailfin Tang - Zebrasoma veliferum
Sea Hare - Dolabella auricularia
Semilarvatus Butterfly; Red Sea - Chaetodon semilarvatus
Six Line Wrasse - Pseudocheilinus hexataenia
Snowflake Moray - Echidna nebulosa
Sohal Tang; Red Sea - Acanthurus sohal
Strawberry (Purple) Pseudo - Pseudochromis porphyreus
Tailspot Blenny - Ecsenius stigmatura
Tropical Turbo Snail Turbo sp.
Twinspot (Signal) Goby - Signigobius biocellatus
Two Spot Blenny - Ecsenius bimaculatus
Watchman Goby (Pink/Blue Spot) - Cryptocentrus leptocepha
White Sand Star - Archaster typicus
Yellow Eye Tang; Haw. - Ctenochaetus strigosus
Yellow Eye Tang; Haw. - Ctenochaetus strigosus
Yellow Rose (Antenna) Goby - Stonogobiops nematodes
Yellowtail Blue Damsel - Chrysiptera sp.
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Glo Baby Glo

The front of the store has an array of aquariums, supplies, frozen foods, and all the essential plumbing supplies needed to set up and maintain an aquarium or pond.