Fish Feeding TechniqueFish Feeding TechniqueBy Mr. “Eating Is Fun” By Mr. “Eating Is Fun”

ChapmanChapman

Feeding TechniqueFeeding Technique

•TypesTypes::• 1. Filter Feeders1. Filter Feeders• 2. Scavengers2. Scavengers• 3. Ambush Feeders3. Ambush Feeders• 4. Gulp and suck4. Gulp and suck• 5. Surface feeders5. Surface feeders

Filter FeedersFilter Feeders• Filter feeders suck in water and food Filter feeders suck in water and food

like phytoplankton and zooplankton like phytoplankton and zooplankton stick to filaments (Gill Rakers), which stick to filaments (Gill Rakers), which are then digested.are then digested.

• These fish usually have very large These fish usually have very large mouths and are located on the front of mouths and are located on the front of their head.their head.

Mouth PositionsMouth Positions• Most predatory fish Most predatory fish

have their mouth have their mouth open to the front open to the front called a terminal called a terminal mouth.mouth.

• So their mouth is So their mouth is the first thing to the first thing to reach the preyreach the prey

ScavengersScavengers• These type of fish are the clean-up These type of fish are the clean-up

crew of the rivers/lakes.crew of the rivers/lakes.

• These fish eat anything that is organic These fish eat anything that is organic (dead or alive).(dead or alive).

• Mouths are usually located on the front Mouths are usually located on the front or bottom of the head.or bottom of the head.

Mouth PositionMouth Position• Some fish have a Some fish have a

mouth that opens mouth that opens to the front, but is to the front, but is on the bottom of on the bottom of the head and the head and called sub-terminal called sub-terminal mouth.mouth.

Mouth PositionsMouth Positions• Fish that have their Fish that have their

mouth open to the mouth open to the bottom their head bottom their head are called an are called an Inferior mouth.Inferior mouth.

Ambush FeedersAmbush Feeders• These fish hide and wait for a smaller These fish hide and wait for a smaller

fish to swim by its mouth, and then they fish to swim by its mouth, and then they jump out and grab the prey.jump out and grab the prey.

• Predators may wait days for prey to Predators may wait days for prey to swim.swim.

• Their mouths are located on the front or Their mouths are located on the front or top of their head.top of their head.

Gulp and SuckGulp and Suck• These fish move around slowly, in a These fish move around slowly, in a

stealth like mode and when they get stealth like mode and when they get near prey they suck in water, which near prey they suck in water, which creates a current that sucks the prey creates a current that sucks the prey into the predators mouth.into the predators mouth.

• Their mouths are located on the front Their mouths are located on the front or top of their head.or top of their head.

• Catfish sensory Catfish sensory organs on their head organs on their head are called Barbals.are called Barbals.

• Used to find food, Used to find food, because the water because the water where they live is where they live is very murky and they very murky and they can’t see.can’t see.

Surface FeedersSurface Feeders• These fish feed off animals on the These fish feed off animals on the

surface of the water or out of the surface of the water or out of the water.water.

• These fish usually have very These fish usually have very developed eyes.developed eyes.

• These fish mouths are located on the These fish mouths are located on the top of their head.top of their head.

Mouth PositionsMouth Positions• Fish that feed off Fish that feed off

the surface have a the surface have a mouth that opens mouth that opens to the top of their to the top of their head called a head called a superior mouth.superior mouth.

Specialized FinsSpecialized Fins• On male viviparous On male viviparous

fish the anal fin is fish the anal fin is modified for modified for reproduction. This reproduction. This fin is called…fin is called…

• Gonopodium Gonopodium

Fish DiseasesFish Diseases• Ich Ich – is an external parasite, looks – is an external parasite, looks

like little white dots all over the fish.like little white dots all over the fish.• Ich is the most common type of Ich is the most common type of

disease.disease.

Fish DiseasesFish Diseases• Hole in the HeadHole in the Head – caused by – caused by

vitamin deficiency or dirty water, vitamin deficiency or dirty water, skin breaks open and you have a skin breaks open and you have a decay of tissue.decay of tissue.

Fish DiseasesFish Diseases• Fungal InfectionsFungal Infections – see white – see white

patches form on the fins and or body.patches form on the fins and or body.• Looks like pieces of cotton.Looks like pieces of cotton.• Caused by dirty water and Caused by dirty water and

malnutrition.malnutrition.