Try these curated collections

Anemone Fish
Betta fish, siamese fighting fish, betta splendens (Fullmoon betta
)isolated on black background
Tropical fish collection isolated on white background
colorful coral reef with many fishes and sea turtle
Betta fish, siamese fighting fish, betta splendens isolated on black background,
fish on black background, Multi color Siamese fighting fish,
Betta fish in pink blue black background
Multi color Siamese fighting fish(Rosetail)(halfmoon),dragon fighting fish,Betta splendens,on black background with clipping path,Dumbo ears
Bright coral reef scene of pink Thistle soft corals and Plate coral,  with some small fish swimming around
Rhythmic of Betta fish, siamese fighting fish betta splendens (Halfmoon red dragon  betta ),isolated on black background.
Photo collage of blue red halfmoon type of betta splendens siamese fighting fish isolated on black color background. Image photo
Concept - to be yourself, to be unique. A flock of standard clownfish and one colorful fish. On black background
Colourful Betta fish,Siamese fighting fish in movement isolated on black background. Capture the moving moment of colourful siamese fighting fish isolated on black background,
Sea fish collection isolated on white background. Vector illustration
Pink betta fish "Fancy Halfmoon Betta" The moving moment beautiful of Siamese Fighting fish in Thailand. Betta splendens Pla-kad (biting fish), Rhythmic of Betta fish isolated on black background
Betta fish, siamese fighting fish, betta splendens (Halfmoon betta
)isolated on black background
Cute tropical fish - a picture for coloring. Vector linear fish - animal design element. Aquarium fish - pet. Outline. 
hand drawing

Sea turtle. Realistic, artistic, colored drawing of a sea turtle on a white background in a watercolor style.
Seamless pattern with fishes. Hand drawn undersea world. Colorful artistic background. Aquarium. Can be used for wallpaper, textiles, wrapping, card, cover. Vector illustration, eps10
Photo of beautiful coral colony.
Multi color Siamese fighting fish(Rosetail),fighting fish,Betta splendens,on black background
regal angelfish (pygoplites diacanthus)
Rainbow Object Fish to be colored, the coloring book for preschool kids with easy educational gaming level.
Underwater photo of a hard-coral reef in red sea
Coral Reef and Tropical Fish in Sunlight. Singapore aquarium
The African jewelfish (Hemichromis bimaculatus) isolated on white background
Great collection of a tropical fish on a white background.
Spotted blue discus, freshwater fish native to the Amazon River isolated on white
Gold Fish Isolated on White Background
Photo of a tropical Fish on a coral reef. Red Sea
Seamless pattern of ornamental fish.Vector
Amazing colorful open brain coral
colorful coral reef with many fishes and sea turtle
Set of Colorful Fishes. Vector Illustration. Cartoon Style. Decorative Design for Sea Life Illustrations. Posters, Cards, Banners, Fashion
Exotic tropical fish purple Yellowfin surgeonfish Acanthurus xanthopterus closeup
colorful coral reef with many fishes and sea turtle
Watercolor colorful set fishes. Flame angelfish, Copperband Butterflyfish, Purple mask angelfish, Zebra angelfish, Blue Tang, Betta splendens, Lion, Yellow tang, Mandarine, Trigger, Red discus
Multi color Siamese fighting fish(Rosetail)(half moon),Betta splendens,on ฺblack background with clipping path,Pink Dumbo Halfmoon
Set of betta fish on black background
Tropical coral fish collection on white background
Texture of tail siamese fighting fish
Discus (Symphysodon spp.),  freshwater fish native to the Amazon River, in aquarium
Tropical fish collection on white background
red and blue fighting fish tail texture isolated on black background
Colorful aquarium, showing different  fishes swimming
Betta fish, siamese fighting fish, betta splendens isolated on black background,
fish on black background, Multi color Siamese fighting fish,
Multi color Siamese fighting fish(candy nemo ),Betta splendens,on black background with clipping path,Betta Fancy Koi Half Moon Plakat
underwater coral reef landscape in the deep blue ocean with colorful fish and marine life
Colourful Betta fish,Siamese fighting fish in movement isolated on black background. Capture the moving moment of colourful siamese fighting fish isolated on black background,
aquarium sea fish wallpaper
Rhythmic of Betta fish, siamese fighting fish betta splendens (Halfmoon red dragon  betta ),isolated on black background.
Colorful fishes and corals in the aquarium
Colorful corals and tropical fish under water surface
School barracuda fish and scuba divers
underwater coral reef landscape 16to9 background  in the deep blue ocean with colorful fish and marine life

Search for "colorful fish" in these categories

Tropical fish and Hard corals in the Red Sea, Egypt
Set of cute fish. Vector illustration.
 School of surgeonfish on a very beautiful colorful coral reef underwater. Maldives island.
Watercolor seahorse, vector illustration.
aquarium of jellyfish, fish, seaweed
The colorful tetras Fish (Gymnocorymbus ternetzi) in fish tank. These fish were injected with color to make it beautiful for trade.
Amazing coral reef aquarium moment
Discus in the native habitat
Overhead View of Clown Fish and Coral
A cartoon vector illustration set of rainbow colored stripey fishes.
Close up of a Fivestripe wrasse (Thalassoma quinquevittatum) sitting on the reef, very colorful body with pink and green pattern.
Colorful fish in aquarium saltwater world
Underwater image of coral reef and Masked Butterfly Fish
Tropical Fish set. Vector aquarium or sea icons. Coral Reef underwater animals. Isolated ocean life collection. Marine illustration in cartoon style. Exotic blue angelfish, butterfly, surgeon fishes
Fish is kind of cichlids swimming in water
Regal Angelfish in the Red Sea, Egypt.
Betta fish or Siamese fighting fish on white background, Thai fighting fish
Tropical fish isolated on white background. Angelfish: Emperor, Regal, Yellowmask, Koran, Threespot and Bluering Angelfishes
Photo of a coral colony on a reef, Egypt
Aquarium Fishes - isolated vector illustration on black background. School of fish.
Scuba diver looks at group of Masked Butterfly Fish
Tropical Fish
Betta fish, siamese fighting fish,(Halfmoon) isolated on black background
Pattern of fish in the style of doodle.Vector
Cute sea aquarium blue arabian angel fish colorful and black contour line on a white background. Fish marine animal. Isolated cartoon vector illustration, page coloring book.
coral fish
"Fancy Halfmoon Betta" capture the moving moment beautiful of siam betta fish in thailand on white background
Amphiprioninae clown fish on deep blue sea color background
Photo of a coral colony
Watercolor whale hand painted illustration isolated on white background.Animal watercolor silhouette sketch. Hand draw art illustration.Graphic for fabric,tee-shirt, postcard, greeting card, sticker.
photo of Sea turtle in the Galapagos island
Watercolor exotic fish isolated on white background.
set of fish koi, on white background, watercolor illustration, hand drawing
Colorful fish, stingray and black tipped sharks underwater in Bora Bora lagoon
Seamless Sea travel icon set, underwater diving animal - tropical fish. Vector illustration abstract template. Elegant modern style, white background. Angel, butterfly and more marine fishes icons
Discus Fish or Pompadour Fish or Symphysodon Fish on white background
Masked butterfly fish, Chaetodon semilarvatus.
Seahorse coloring page. Vector Illustration.
Underwater world. Coral reef and fishes in Red sea at Egypt
Vector illustration. Fish creative design.
underwater image of colorful tropical fish
Colorful fish in aquarium saltwater world
Pattern for coloring book. Coloring book pages for kids and adults.Vector Cute Cartoon Fish.  Henna Mehndi Tattoo Style Doodles
Underwater image of coral reef and School of Masked Butterfly Fish
Betta fish, siamese fighting fish, betta splendens (Halfmoon betta
)isolated on white background
School of colorful Siamese glass-fishes
Photo of a coral colony, Red Sea, Egypt
koi carp seamless pattern. watercolor fish illustration
Isolated river fish. Set of freshwater aquarium cartoon fishes. varieties of ornamental popular color fish. Flat design fish. Vector illustration, fishes. fish collection. aquarium modern flat fishes.
vector illustration of the sea. discus fish and clown fish in the sea. algae, fish and coral in the sea
Cute endangered turtle swimming in turquoise water
of 12,555