Ardea-alba balanced balancing bird carnivore carnivorous common-egret elegant feathers foliage great-egret greenery Heron large-egret long-legged long-necked motionless patient plumage reeds resting sharp-beaked solitary-feeder standing-still wader wading-bird waiting water’s-edge white white-egret widely-distributed yellow-billed yellow-eyed plume plumed reflections ripples wading water water-bird aquarium-fish artificial breeders breeding colorful colors colourful colours common community-fish differences fish freshwater-aquarium-species guppies guppy guppy-strains hardy jar live-bearing-species millionfish pattern-variations patterns peaceful plastic-vegetation poecilia-reticulata popular rainbow-fish shapes Sizes small-size species tank-water temporary-container tropical-fish variable-food-preference variations variety