These are the most frequently used words in this book.
air
always
aquarium
available
best
better
between
body
bottom
breed
breeding
buy
cause
changes
clean
color
comet
common
conditions
day
different
disease
dorsal
easily
eat
eggs
essential
excellent
eyes
fantail
filter
fins
first
fish
five
food
gallon
get
goldfish
good
gravel
group
grow
hardy
head
help
hobbyists
home
however
important
inches
keep
kept
known
large
light
live
long
look
may
must
need
new
number
pet
place
plants
ponds
possible
problems
provide
pump
require
rocks
scales
should
size
small
sometimes
species
sure
surface
swim
tail
take
tank
temperature
tend
thing
three
time
treatment
two
types
use
usually
varieties
veiltail
want
water