actinopterygii

algae

animalia

bad

blue

bubbles

chordata

common

cyprinidae

cypriniformes

danger

dead

deadly

ecological

ecology

ecosystem

environment

europe

fish

flow

freshwater

green

lake

leaf

leuciscinae

life

moving

natural

nature

nobody

outdoor

person

pond

problem

ripples

roach

rotten

rutilus

single

smell

stale

stink

summer

surface

swamp

swampland

toxic

ukraine

waste

water