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🐟 Fish Blood Cells - Watch Blood Flow!

See living cells move through blood vessels

🌍 Choose Your Language / Elige tu idioma

See science words in your home language!

📖 Science Words in Spanish

BloodSangre

Red blood cellsGlóbulos rojos

Blood vesselVaso sanguíneo

ArteryArteria

VeinVena

CapillaryCapilar

HeartCorazón

OxygenOxígeno

MicroscopeMicroscopio

📖 Science Words in Chinese

Blood血液 (xuèyè)

Red blood cells红细胞 (hóngxìbāo)

Blood vessel血管 (xuèguǎn)

Artery动脉 (dòngmài)

Vein静脉 (jìngmài)

Capillary毛细血管 (máoxì xuèguǎn)

Heart心脏 (xīnzàng)

Oxygen氧气 (yǎngqì)

Microscope显微镜 (xiǎnwēijìng)

📖 Science Words in Arabic

Bloodدم (dam)

Red blood cellsخلايا الدم الحمراء (khalaya al-dam al-hamra')

Blood vesselوعاء دموي (wi'a' damawi)

Arteryشريان (shiryan)

Veinوريد (warid)

Capillaryشعيرة دموية (shu'ayra damawiya)

Heartقلب (qalb)

Oxygenأكسجين (oksijin)

Microscopeمجهر (mijhar)

📖 Science Words in Somali

BloodDhiig

Red blood cellsUnugyada dhiigga cas

Blood vesselXidid dhiig

ArteryXididka dhiigga

VeinXididka wadnaha

CapillaryXidid yaryar

HeartWadne

OxygenOksijiin

MicroscopeMicroskob

📖 Science Words in Amharic

Bloodደም (dem)

Red blood cellsቀይ የደም ህዋሶች (qey yedem hiwasoch)

Blood vesselየደም ቧንቧ (yedem bunba)

Arteryየደም ቧንቧ (yedem bunba)

Veinደም አላፊ ቧንቧ (dem alafi bunba)

Capillaryጥቃቅን የደም ቧንቧ (tiqaqin yedem bunba)

Heartልብ (lib)

Oxygenኦክስጅን (oxygen)

Microscopeማይክሮስኮፕ (microscope)

📖 Science Words in Dinka

BloodRiem

Red blood cellsRan riem car

Blood vesselWic riem

ArteryWic riem alɔu

VeinWic riem thök

CapillaryWic riem atiny

HeartPiu

OxygenYic mith

MicroscopeLɛn atiny

📖 Science Words in Khmer

Bloodឈាម (chheam)

Red blood cellsកោសិកាឈាមក្រហម (koseka chheam krahom)

Blood vesselសរសៃឈាម (sarsai chheam)

Arteryសរសៃឈាមក្រហម (sarsai chheam krahom)

Veinសរសៃឈាមខៀវ (sarsai chheam khiev)

Capillaryសរសៃឈាមតូចៗ (sarsai chheam touch-touch)

Heartបេះដូង (beh doong)

Oxygenអុកស៊ីសែន (oksisen)

Microscopeមីក្រូទស្សន៍ (microscope)

📖 Science Words in Swahili

BloodDamu

Red blood cellsSeli nyekundu za damu

Blood vesselMishipa ya damu

ArteryMishipa mikubwa ya damu

VeinMishipa ya kurudi damu

CapillaryMishipa midogo ya damu

HeartMoyo

OxygenOksijeni

MicroscopeDarubini

⚠️ Be Kind to the Fish!

This lab uses a LIVE fish. The fish will be okay if you:

Keep the fish wet (use wet cotton)
Work quickly (don't keep fish out of water too long)
Be gentle (no squeezing!)
Put fish back in water right after

🔬 The Question:

Can we see living blood cells moving?

Yes! Fish tails are see-through (transparent).

You can use a microscope to watch blood flow!

🐟 Why Use a Fish?

Fish tail is thin and see-through
You can see blood vessels without cutting
Blood cells are big enough to see
Fish will be okay if we are gentle!

🧪 What you need:

1 small fish (minnow - from bait shop)
Wet cotton
Clear plastic bag (small)
Microscope
Dropper with water
Container with water (for fish)

📝 Steps - Do this:

Get fish ready: Take fish from water. Wrap it in wet cotton. Leave tail sticking out!
Put fish on slide: Lay fish on microscope. Put tail fin flat on the glass.
Keep fish wet: Use dropper to add water drops on fish. Keep it wet!
Look through microscope: Start with low power (4x or 10x).
Find blood vessels: Look for thin lines with red cells moving.
Turn up power: Switch to high power (40x) to see cells better.
Watch blood flow! You should see round red cells moving!
Put fish back: After 5-10 minutes, put fish back in water!

👀 What to look for:

Red blood cells (RBCs): Small, round, red dots moving fast
Blood vessels: Thin tubes carrying the blood cells
3 types of vessels:
- Arteries: Blood moves FAST, pulses with heartbeat
- Veins: Blood moves slower, steady flow
- Capillaries: TINY tubes, cells go one-by-one!

📊 Write what you saw:

1. Did you see red blood cells moving? Describe them:

2. Could you tell arteries from veins? How were they different?

3. Did you see tiny capillaries? What did they look like?

4. What was the coolest thing you saw?

🤔 Think about it:

Why do we need blood to flow through our bodies?
What do red blood cells carry? (Hint: starts with "O")
Why are capillaries so tiny?
How is fish blood like human blood?
Was the fish okay? How do you know?

💡 What you learned:

Blood is alive and always moving!

Red blood cells carry oxygen to your whole body
Your heart pumps blood through vessels
Arteries take blood AWAY from heart (fast!)
Veins bring blood BACK to heart (slower)
Capillaries are tiny - let oxygen out to cells!
Fish and humans both have blood that flows!