"
'
Key Factors
_
-
7
aquarists' to keepacontainer With a capacity much larger than“
,
“
*
-
20 gallons in th€iI‘homes, and there is no real reason why they should
not keep Tinfôil Barbs in
but the same argument does not really
excuse” those who keep goldfish ingoldfish bowls.
‘
«
ï
,
Many' fishes, particularly “those which have been bred in captivitÿ
for generations, are accustomed to and, in fact, know no other
than that in small containers, although they still require adequ—ate
space“if they are to grow to their full size. But other fishes, particul—
Ÿ ‘
arly those imported straight from the wild, become extremely.
nervous when kept ina restricted space, 'and may need even more …
“space to settle down than they do to grow fully.
,
Ÿ
.
Space is also important in-the relationships between fish or groups
of fish
conict—. Territorial fish are ”good examples.
The area of a species’ territory depends upon the environmental
requirements of that fish-,and is instinctivè: Hence,' if two fish OfthiS:
type are put together in a
available
only
adequate forone of them, eitherl‘continueil-fightingwill result or
]
the“weaker fish will-be killed or “spend its whole life being
‘
.
Equally, fish
school up will only be
this if
_'
swimming space available to them
larger than that usually taken
_
up by the school when swimming normally. If the container is of the
”
same size or
the fish from'their own ViewPoint, Will
be in a school already but this may not be apparent
to the aquarist. .
The volume of an
is alsoimportant as a factor in the
stability of any biologicalbalances Which may
be set up, ”such; as
j those
fish and— aquà—ticiphnts. If a-containerrof large'volumeihas
good
and-is not overcrowdedthen changes
in… the
environ—.
in=àsmall Containers
or
alarmihgly and, in .
badœsesalmostanymmor
can be enough to ruin the _!
-
has so far been said about Water surface Œea,Which—is‘
'—
well known to be an important factor in fish growth and…b‘iblç1gical …‘,
balances, This factor will be discussed later
but at_the
it. is necessary
to question the commonly held view that a
__
Ï
large surface area can entirely compensate for lack of space or
'
volume; Water surface area can always be effectively increased by 'a!
.
reasonable amount of surfaceturbulence caused by an ascending air
!
“stream, but lack of space
is not so easily rectified.
:
_
_
“whole purpose
Of this section has been to itnpress on the
_
…
__
benet—s which accrue from using an aquarium container
'
Key Factors
_
-
7
aquarists' to keepacontainer With a capacity much larger than“
,
“
*
-
20 gallons in th€iI‘homes, and there is no real reason why they should
not keep Tinfôil Barbs in
but the same argument does not really
excuse” those who keep goldfish ingoldfish bowls.
‘
«
ï
,
Many' fishes, particularly “those which have been bred in captivitÿ
for generations, are accustomed to and, in fact, know no other
than that in small containers, although they still require adequ—ate
space“if they are to grow to their full size. But other fishes, particul—
Ÿ ‘
arly those imported straight from the wild, become extremely.
nervous when kept ina restricted space, 'and may need even more …
“space to settle down than they do to grow fully.
,
Ÿ
.
Space is also important in-the relationships between fish or groups
of fish
conict—. Territorial fish are ”good examples.
The area of a species’ territory depends upon the environmental
requirements of that fish-,and is instinctivè: Hence,' if two fish OfthiS:
type are put together in a
available
only
adequate forone of them, eitherl‘continueil-fightingwill result or
]
the“weaker fish will-be killed or “spend its whole life being
‘
.
Equally, fish
school up will only be
this if
_'
swimming space available to them
larger than that usually taken
_
up by the school when swimming normally. If the container is of the
”
same size or
the fish from'their own ViewPoint, Will
be in a school already but this may not be apparent
to the aquarist. .
The volume of an
is alsoimportant as a factor in the
stability of any biologicalbalances Which may
be set up, ”such; as
j those
fish and— aquà—ticiphnts. If a-containerrof large'volumeihas
good
and-is not overcrowdedthen changes
in… the
environ—.
in=àsmall Containers
or
alarmihgly and, in .
badœsesalmostanymmor
can be enough to ruin the _!
-
has so far been said about Water surface Œea,Which—is‘
'—
well known to be an important factor in fish growth and…b‘iblç1gical …‘,
balances, This factor will be discussed later
but at_the
it. is necessary
to question the commonly held view that a
__
Ï
large surface area can entirely compensate for lack of space or
'
volume; Water surface area can always be effectively increased by 'a!
.
reasonable amount of surfaceturbulence caused by an ascending air
!
“stream, but lack of space
is not so easily rectified.
:
_
_
“whole purpose
Of this section has been to itnpress on the
_
…
__
benet—s which accrue from using an aquarium container