En casa también tenemos un pez pequeño en el acuario del salón.

Spanish is much more flexible than English with word order. Starting with En casa puts the setting first: at home.

Also, Spanish often leaves out subject pronouns like nosotros because the verb already shows who is doing the action. So:

• tenemos = we have

A more neutral order would also be possible, such as:

• También tenemos un pez pequeño en casa...

But En casa at the beginning sounds very natural.

En casa is a very common expression meaning at home. It usually does not use the article.

• Estoy en casa = I’m at home
• Trabajamos en casa = We work at home

If you say en la casa, it usually refers to a specific house as a building, not the general idea of home.

So here, En casa means at home / in our home, which is why there is no la.

También means also or too.

In this sentence, it adds the idea that this is one more thing they have:

• En casa también tenemos... = At home we also have...

Its position can vary a bit in Spanish, depending on emphasis. For example:

• También tenemos un pez pequeño...
• En casa también tenemos...

Both are natural. Here, putting también after En casa sounds smooth and emphasizes the idea of also within the home context.

Tenemos is the first person plural form of the verb tener (to have) in the present tense.

Conjugation of tener in the present:

• tengo = I have
• tienes = you have
• tiene = he/she/it has
• tenemos = we have
• tenéis = you all have (Spain)
• tienen = they/you all have

So tenemos means we have.

Because Spanish often drops subject pronouns when they are not needed.

The verb tenemos already tells you the subject is we. So:

• (Nosotros) tenemos = we have

Including nosotros is possible, but it is usually only added for emphasis, contrast, or clarity.

So this sentence does not need nosotros.

This is a very common question.

• pez = a fish when it is alive
• pescado = fish as food

So in an aquarium, you use pez:

• un pez pequeño = a small fish

But at dinner, you would usually say pescado:

• Comemos pescado = We eat fish

In Spanish, adjectives usually come after the noun, especially when they describe physical qualities like size, color, shape, etc.

So:

• un pez pequeño = a small fish

That is the most normal order.

You can sometimes put an adjective before the noun, but it often changes the tone or emphasis. Un pequeño pez is possible, but it can sound a bit more literary, expressive, or focused on the idea of smallness.

For everyday description, un pez pequeño is the standard choice.

Because the sentence gives two different pieces of location information:

• En casa = the general location: at home
• en el acuario del salón = the specific location: in the living-room aquarium

So the structure is basically:

• At home, we also have a small fish in the aquarium in the living room

Spanish uses both because each phrase adds different information.

Yes, acuario can refer to an aquarium in general, and in context it can also mean a home fish tank.

In this sentence, since it says del salón, it most naturally means the aquarium/fish tank in the living room.

So a learner can think of it here as:

• the aquarium
• or more naturally in some English contexts, the fish tank

Because in Spanish, de + el contracts to del.

So:

• de el salón → del salón

This is mandatory in normal Spanish.

Similarly:

• a + el = al

Examples:

• el acuario del salón = the aquarium of the living room / the living-room aquarium
• voy al salón = I’m going to the living room

In Spain, salón commonly means the living room or sitting room.

So:

• el salón = the living room

Depending on context, salón can also mean a hall or large room, but in an everyday home sentence like this, it almost certainly means living room.

Spanish usually expresses this kind of relationship with de rather than stacking nouns together like English often does.

English can say:

• the living-room aquarium

Spanish normally says:

• el acuario del salón

Literally, that is more like:

• the aquarium of the living room

This is the standard and natural way in Spanish.

Yes, Tenemos también... is possible, but it sounds a little different in rhythm and emphasis.

Compare:

• También tenemos un pez pequeño...
• Tenemos también un pez pequeño...

Both are understandable and grammatical, but también tenemos is generally the more natural choice in ordinary speech for this kind of sentence.

Un is the masculine singular indefinite article, meaning a or an.

• un pez = a fish

It is used because pez is:

• singular
• masculine
• countable

If it were plural, it would be:

• unos peces = some fish

And if the noun were feminine singular, you would use una instead.

The plural of pez is peces.

So:

• un pez = a fish
• dos peces = two fish

This is an irregular spelling change:

• z changes to c before -es

That happens in many Spanish words ending in z:

• luz → luces
• voz → voces
• pez → peces

Yes, at least a little.

The sentence itself is understandable everywhere in the Spanish-speaking world, but salón for living room is especially common in Spain.

In other regions, people might more often say things like:

• la sala
• la sala de estar
• el living (in some countries)

But el salón is perfectly natural and very common in Spain.